diff --git a/.gitea/workflows/build-push.yaml b/.gitea/workflows/build-push.yaml
index 43e7620..403d6ed 100644
--- a/.gitea/workflows/build-push.yaml
+++ b/.gitea/workflows/build-push.yaml
@@ -321,6 +321,10 @@ jobs:
 
   Build-LiteSpeed-Images:
     runs-on: ubuntu-latest
+    # One place for the OLS base tag: digest lookup and build-args both read it.
+    # OLS_VERSION pinned to 1.8.4 (see the build step); Dockerfile default differs.
+    env:
+      OLS_VERSION: "1.8.4"
     strategy:
       # One PHP version failing (e.g. an EOL stream) must not cancel the
       # security builds of the others.
@@ -335,10 +339,63 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      # Base image pinned by DIGEST, looked up directly at Docker Hub (never via
+      # the pkg-cache mirror), so the mirror can only serve content-addressed
+      # blobs that BuildKit verifies. If the lookup fails this job does NOT use
+      # the mirror and pulls the tag straight from Docker Hub. docs/pkg-cache.md.
+      - name: Resolve base image digest (Docker Hub, direct)
+        id: base
+        env:
+          BASE_TAG: litespeedtech/openlitespeed:${{ env.OLS_VERSION }}-lsphp${{ matrix.phpver }}
+        run: |
+          set -uo pipefail
+          if ref=$(.gitea/scripts/resolve-base-image.sh "$BASE_TAG") && [[ "$ref" =~ ^[a-z0-9][a-z0-9._/-]*@sha256:[0-9a-f]{64}$ ]]; then
+            echo "base-image: ${BASE_TAG} -> ${ref} (digest from registry-1.docker.io)"
+            echo "image=${ref}" >> "$GITHUB_OUTPUT"
+            echo "pinned=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "::warning::base image ${BASE_TAG}: Docker Hub digest lookup failed - pulling the tag directly from Docker Hub, pkg-cache registry mirror NOT used"
+            echo "image=${BASE_TAG}" >> "$GITHUB_OUTPUT"
+            echo "pinned=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      # Internal package cache (CT130 pkg-cache, docs/pkg-cache.md). Used ONLY if
+      # it answers over TLS with our pinned CA; otherwise (down, unreachable,
+      # bad/expired cert) this job builds from the upstream repos and Docker Hub
+      # exactly as before. The repo cache and the registry mirror are probed
+      # separately so either can fail back on its own.
+      - name: Probe package cache
+        id: pkgcache
+        # The registry mirror is only used for a digest-pinned base image.
+        env:
+          BASE_PINNED: ${{ steps.base.outputs.pinned }}
+        run: |
+          url=""; mirror=""
+          if curl -fsS --max-time 5 --cacert keys/pkg-cache/ca.crt -o /dev/null https://192.168.1.40/; then url="https://192.168.1.40"; fi
+          if [ "$BASE_PINNED" = true ] && curl -fsS --max-time 5 --cacert keys/pkg-cache/ca.crt -o /dev/null https://192.168.1.40:5000/v2/; then mirror="192.168.1.40:5000"; fi
+          echo "pkg-cache: repos=${url:-<unreachable: upstream>} registry-mirror=${mirror:-<not used: Docker Hub direct>}"
+          [ -n "$url" ] || echo "::warning::pkg-cache unreachable - building from upstream repositories"
+          echo "url=${url}" >> "$GITHUB_OUTPUT"
+          echo "mirror=${mirror}" >> "$GITHUB_OUTPUT"
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
 
+      # BuildKit (docker-container driver) ignores dockerd's registry-mirrors,
+      # so the mirror is configured on the builder; BuildKit itself still falls
+      # back to Docker Hub if the mirror stops answering mid-run.
+      - name: Set up Docker Buildx (Docker Hub via pkg-cache mirror)
+        if: steps.pkgcache.outputs.mirror != ''
+        uses: docker/setup-buildx-action@v3
+        with:
+          buildkitd-config-inline: |
+            [registry."docker.io"]
+              mirrors = ["192.168.1.40:5000"]
+            [registry."192.168.1.40:5000"]
+              ca = ["${{ github.workspace }}/keys/pkg-cache/ca.crt"]
+
       - name: Set up Docker Buildx
+        if: steps.pkgcache.outputs.mirror == ''
         uses: docker/setup-buildx-action@v3
 
       # Per-run cache-bust value. Each job's buildx builder is created fresh by
@@ -409,7 +466,9 @@ jobs:
           push: true
           build-args: |
             PHPVER=${{ matrix.phpver }}
-            OLS_VERSION=1.8.4
+            OLS_VERSION=${{ env.OLS_VERSION }}
+            BASE_IMAGE=${{ steps.base.outputs.image }}
+            PKG_CACHE=${{ steps.pkgcache.outputs.url }}
             CACHE_BUST=${{ steps.bust.outputs.value }}
             EXPECT_LSPHP_PKG=${{ steps.lsphp.outputs.pkg }}
             EXPECT_PHP_VERSION=${{ steps.lsphp.outputs.php }}
@@ -423,6 +482,10 @@ jobs:
 
   Build-LSPHP-Images:
     runs-on: ubuntu-latest
+    # One place for the OLS base tag: digest lookup and build-args both read it.
+    # OLS_VERSION pinned to 1.8.4 (see the build step); Dockerfile default differs.
+    env:
+      OLS_VERSION: "1.8.4"
     strategy:
       # One PHP version failing (e.g. an EOL stream) must not cancel the
       # security builds of the others.
@@ -437,10 +500,63 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      # Base image pinned by DIGEST, looked up directly at Docker Hub (never via
+      # the pkg-cache mirror), so the mirror can only serve content-addressed
+      # blobs that BuildKit verifies. If the lookup fails this job does NOT use
+      # the mirror and pulls the tag straight from Docker Hub. docs/pkg-cache.md.
+      - name: Resolve base image digest (Docker Hub, direct)
+        id: base
+        env:
+          BASE_TAG: litespeedtech/openlitespeed:${{ env.OLS_VERSION }}-lsphp${{ matrix.phpver }}
+        run: |
+          set -uo pipefail
+          if ref=$(.gitea/scripts/resolve-base-image.sh "$BASE_TAG") && [[ "$ref" =~ ^[a-z0-9][a-z0-9._/-]*@sha256:[0-9a-f]{64}$ ]]; then
+            echo "base-image: ${BASE_TAG} -> ${ref} (digest from registry-1.docker.io)"
+            echo "image=${ref}" >> "$GITHUB_OUTPUT"
+            echo "pinned=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "::warning::base image ${BASE_TAG}: Docker Hub digest lookup failed - pulling the tag directly from Docker Hub, pkg-cache registry mirror NOT used"
+            echo "image=${BASE_TAG}" >> "$GITHUB_OUTPUT"
+            echo "pinned=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      # Internal package cache (CT130 pkg-cache, docs/pkg-cache.md). Used ONLY if
+      # it answers over TLS with our pinned CA; otherwise (down, unreachable,
+      # bad/expired cert) this job builds from the upstream repos and Docker Hub
+      # exactly as before. The repo cache and the registry mirror are probed
+      # separately so either can fail back on its own.
+      - name: Probe package cache
+        id: pkgcache
+        # The registry mirror is only used for a digest-pinned base image.
+        env:
+          BASE_PINNED: ${{ steps.base.outputs.pinned }}
+        run: |
+          url=""; mirror=""
+          if curl -fsS --max-time 5 --cacert keys/pkg-cache/ca.crt -o /dev/null https://192.168.1.40/; then url="https://192.168.1.40"; fi
+          if [ "$BASE_PINNED" = true ] && curl -fsS --max-time 5 --cacert keys/pkg-cache/ca.crt -o /dev/null https://192.168.1.40:5000/v2/; then mirror="192.168.1.40:5000"; fi
+          echo "pkg-cache: repos=${url:-<unreachable: upstream>} registry-mirror=${mirror:-<not used: Docker Hub direct>}"
+          [ -n "$url" ] || echo "::warning::pkg-cache unreachable - building from upstream repositories"
+          echo "url=${url}" >> "$GITHUB_OUTPUT"
+          echo "mirror=${mirror}" >> "$GITHUB_OUTPUT"
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
 
+      # BuildKit (docker-container driver) ignores dockerd's registry-mirrors,
+      # so the mirror is configured on the builder; BuildKit itself still falls
+      # back to Docker Hub if the mirror stops answering mid-run.
+      - name: Set up Docker Buildx (Docker Hub via pkg-cache mirror)
+        if: steps.pkgcache.outputs.mirror != ''
+        uses: docker/setup-buildx-action@v3
+        with:
+          buildkitd-config-inline: |
+            [registry."docker.io"]
+              mirrors = ["192.168.1.40:5000"]
+            [registry."192.168.1.40:5000"]
+              ca = ["${{ github.workspace }}/keys/pkg-cache/ca.crt"]
+
       - name: Set up Docker Buildx
+        if: steps.pkgcache.outputs.mirror == ''
         uses: docker/setup-buildx-action@v3
 
       # Per-run cache-bust value. Each job's buildx builder is created fresh by
@@ -511,7 +627,9 @@ jobs:
           push: true
           build-args: |
             PHPVER=${{ matrix.phpver }}
-            OLS_VERSION=1.8.4
+            OLS_VERSION=${{ env.OLS_VERSION }}
+            BASE_IMAGE=${{ steps.base.outputs.image }}
+            PKG_CACHE=${{ steps.pkgcache.outputs.url }}
             CACHE_BUST=${{ steps.bust.outputs.value }}
             EXPECT_LSPHP_PKG=${{ steps.lsphp.outputs.pkg }}
             EXPECT_PHP_VERSION=${{ steps.lsphp.outputs.php }}
diff --git a/Dockerfile.litespeed b/Dockerfile.litespeed
index f362f9f..7960e7f 100644
--- a/Dockerfile.litespeed
+++ b/Dockerfile.litespeed
@@ -22,12 +22,18 @@
 ## after FROM for any RUN steps that need it.
 ARG OLS_VERSION=1.8.5
 ARG PHPVER=83
+## CI passes BASE_IMAGE=litespeedtech/openlitespeed@sha256:<digest> of the
+## ${OLS_VERSION}-lsphp${PHPVER} tag, resolved DIRECTLY from Docker Hub in the same
+## run (.gitea/scripts/resolve-base-image.sh), so the pkg-cache registry mirror can
+## only serve content-addressed blobs. Local builds use the tag. Every stage below
+## (incl. the emergency lsphp-src stage) starts from this one image.
+ARG BASE_IMAGE=litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER}
 
 ## ---- EMERGENCY ONLY: lsphp compiled from php.net source ----------------------
 ## Idle unless PHP_SRC_VERSION is set (then /lsphp-src-out stays empty and the
 ## overlay step below is a no-op). Same stage as Dockerfile.lsphp — see there and
 ## docs/lsphp-source-emergency.md.
-FROM litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER} AS lsphp-src
+FROM ${BASE_IMAGE} AS lsphp-src
 ARG PHPVER=83
 ARG CACHE_BUST=
 ARG EXPECT_LSPHP_PKG=
@@ -42,7 +48,7 @@ RUN --mount=type=bind,source=scripts,target=/mnt/scripts \
     fi; \
     PHPVER="${PHPVER}" bash /mnt/scripts/lsphp-src-build.sh
 
-FROM litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER}
+FROM ${BASE_IMAGE}
 ARG PHPVER=83
 ENV PHPVER=${PHPVER}
 
@@ -80,11 +86,20 @@ ENV PHPVER=${PHPVER}
 ARG CACHE_BUST=
 ARG EXPECT_LSPHP_PKG=
 ARG EXPECT_PHP_VERSION=
+## OPTIONAL internal package cache, e.g. --build-arg PKG_CACHE=https://192.168.1.40
+## (CT130 pkg-cache, https only). Unset = upstream repositories (Ubuntu +
+## rpms.litespeedtech.com). Repo files are restored at the end of the RUN, so no
+## layer keeps the cache address. See scripts/pkg-cache-repos.sh.
+ARG PKG_CACHE=
+COPY ./scripts/pkg-cache-repos.sh /usr/local/sbin/pkg-cache-repos.sh
+COPY ./keys/pkg-cache/ /usr/local/share/pkg-cache/
 COPY ./scripts/lsphp-apt-upgrade.sh /usr/local/sbin/lsphp-apt-upgrade.sh
-RUN /usr/local/sbin/lsphp-apt-upgrade.sh "${PHPVER}" \
+RUN /usr/local/sbin/pkg-cache-repos.sh apt && \
+    /usr/local/sbin/lsphp-apt-upgrade.sh "${PHPVER}" \
         gettext-base sudo cron \
         ca-certificates curl wget \
         lsphp${PHPVER}-ldap && \
+    /usr/local/sbin/pkg-cache-repos.sh restore && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /var/cache/apt/archives/*
 
diff --git a/Dockerfile.lsphp b/Dockerfile.lsphp
index 9820a31..c057c4e 100644
--- a/Dockerfile.lsphp
+++ b/Dockerfile.lsphp
@@ -21,6 +21,12 @@
 
 ARG OLS_VERSION=1.8.4
 ARG PHPVER=83
+## CI passes BASE_IMAGE=litespeedtech/openlitespeed@sha256:<digest> of the
+## ${OLS_VERSION}-lsphp${PHPVER} tag, resolved DIRECTLY from Docker Hub in the same
+## run (.gitea/scripts/resolve-base-image.sh), so the pkg-cache registry mirror can
+## only serve content-addressed blobs. Local builds use the tag. Every stage below
+## (incl. the emergency lsphp-src stage) starts from this one image.
+ARG BASE_IMAGE=litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER}
 
 ## ---- stage 0 (EMERGENCY ONLY): lsphp compiled from php.net source -----------
 ## Idle unless PHP_SRC_VERSION is set: lsphp-src-build.sh then exits at once and
@@ -30,7 +36,7 @@ ARG PHPVER=83
 ## — CI: .gitea/workflows/lsphp-source-emergency.yaml; runbook:
 ## docs/lsphp-source-emergency.md. The tarball is sha256- AND OpenPGP-verified
 ## against keys/php-src/; configure flags are replayed from the packaged lsphp.
-FROM litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER} AS lsphp-src
+FROM ${BASE_IMAGE} AS lsphp-src
 ARG PHPVER=83
 ARG CACHE_BUST=
 ARG EXPECT_LSPHP_PKG=
@@ -77,7 +83,7 @@ RUN --mount=type=bind,source=scripts,target=/mnt/scripts \
 ## Separate stage on purpose: the compiler + headers (~400MB) stay out of the
 ## shipped image, which gains only the ~40KB .so. Costs ~1-2 min of CI per PHP
 ## version; both stages share the same base layer, so no extra pull.
-FROM litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER} AS ext-build
+FROM ${BASE_IMAGE} AS ext-build
 ARG PHPVER=83
 
 ## Toolchain layer, deliberately BEFORE the source COPY so editing the extension
@@ -94,11 +100,20 @@ ARG PHPVER=83
 ARG CACHE_BUST=
 ARG EXPECT_LSPHP_PKG=
 ARG EXPECT_PHP_VERSION=
+## OPTIONAL internal package cache, e.g. --build-arg PKG_CACHE=https://192.168.1.40
+## (CT130 pkg-cache, https only). Unset = upstream repositories (Ubuntu +
+## rpms.litespeedtech.com). Repo files are restored at the end of the RUN, so no
+## layer keeps the cache address. See scripts/pkg-cache-repos.sh.
+ARG PKG_CACHE=
+COPY ./scripts/pkg-cache-repos.sh /usr/local/sbin/pkg-cache-repos.sh
+COPY ./keys/pkg-cache/ /usr/local/share/pkg-cache/
 COPY ./scripts/lsphp-apt-upgrade.sh /usr/local/sbin/lsphp-apt-upgrade.sh
 RUN set -e; \
+    /usr/local/sbin/pkg-cache-repos.sh apt; \
     /usr/local/sbin/lsphp-apt-upgrade.sh --no-os-upgrade "${PHPVER}" \
         build-essential autoconf pkg-config \
         lsphp${PHPVER}-dev; \
+    /usr/local/sbin/pkg-cache-repos.sh restore; \
     RTV=$(dpkg-query -W -f='${Version}' lsphp${PHPVER}); \
     DEVV=$(dpkg-query -W -f='${Version}' lsphp${PHPVER}-dev); \
     if [ "$RTV" != "$DEVV" ]; then \
@@ -168,7 +183,7 @@ RUN set -e; \
     cp modules/cac_path_parity.so /build-out/
 
 ## ---- stage 2: the shipped sidecar image ------------------------------------
-FROM litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER}
+FROM ${BASE_IMAGE}
 ARG PHPVER=83
 ENV PHPVER=${PHPVER}
 
@@ -196,10 +211,18 @@ ENV PHPVER=${PHPVER}
 ARG CACHE_BUST=
 ARG EXPECT_LSPHP_PKG=
 ARG EXPECT_PHP_VERSION=
+## OPTIONAL internal package cache, e.g. --build-arg PKG_CACHE=https://192.168.1.40
+## (CT130 pkg-cache, https only). Unset = upstream repositories (Ubuntu +
+## rpms.litespeedtech.com). Repo files are restored at the end of the RUN, so no
+## layer keeps the cache address. See scripts/pkg-cache-repos.sh.
+ARG PKG_CACHE=
+COPY ./scripts/pkg-cache-repos.sh /usr/local/sbin/pkg-cache-repos.sh
+COPY ./keys/pkg-cache/ /usr/local/share/pkg-cache/
 COPY --from=ext-build /build-out/lsphp.version /etc/cac-lsphp-build.version
 COPY ./scripts/lsphp-apt-upgrade.sh /usr/local/sbin/lsphp-apt-upgrade.sh
 RUN set -e; \
     V=$(cat /etc/cac-lsphp-build.version); \
+    /usr/local/sbin/pkg-cache-repos.sh apt; \
     if ! /usr/local/sbin/lsphp-apt-upgrade.sh "${PHPVER}" \
         ca-certificates \
         lsphp${PHPVER}="$V" lsphp${PHPVER}-common="$V" lsphp${PHPVER}-ldap="$V"; then \
@@ -211,6 +234,7 @@ RUN set -e; \
         echo "       build (CI) / rebuild with --no-cache (local)." >&2; \
         exit 1; \
     fi; \
+    /usr/local/sbin/pkg-cache-repos.sh restore; \
     apt-get clean; \
     rm -rf /var/lib/apt/lists/* /var/cache/apt/archives/*; \
     RTV=$(dpkg-query -W -f='${Version}' lsphp${PHPVER}); \
diff --git a/docs/pkg-cache.md b/docs/pkg-cache.md
index b32b772..0b2a368 100644
--- a/docs/pkg-cache.md
+++ b/docs/pkg-cache.md
@@ -21,6 +21,10 @@ On that day a build without the cache spent **1031 s** in its first dnf step. Th
 | `https://192.168.1.40/ubuntu/` | `https://archive.ubuntu.com/ubuntu`, `https://us.archive.ubuntu.com/ubuntu` |
 | `https://192.168.1.40/ubuntu-security/` | `https://security.ubuntu.com/ubuntu`, `https://archive.ubuntu.com/ubuntu` |
 | `https://192.168.1.40/litespeed/` | `https://rpms.litespeedtech.com`, then `http://rpms.litespeedtech.com` |
+| `https://192.168.1.40/nodesource/` | `https://rpm.nodesource.com` (origin only; RPMs signed, repomd not) — added 2026-10-22 |
+| `https://192.168.1.40/debian/` | `https://deb.debian.org/debian` (CDN origin; princeton was 6 h behind on trixie-updates) — added 2026-10-22 |
+| `https://192.168.1.40/debian-security/` | `https://security.debian.org/debian-security`, `https://deb.debian.org/debian-security` — added 2026-10-22 |
+| `https://192.168.1.40/goproxy/` | `https://proxy.golang.org` (Go module proxy; `/sumdb/` is 404 there, so `go` checks sum.golang.org directly) — added 2026-10-22 |
 | `192.168.1.40:5000` (TLS, pkg-cache CA) | Docker Hub pull-through cache (`registry-1.docker.io`) |
 
 Plain `http://192.168.1.40/` answers **403** to LAN clients.
@@ -32,6 +36,7 @@ Cache rules:
   - apt `dists/`, except `by-hash/`
   - `*-latest*.rpm` and `remi-release-N.rpm`
   - `RPM-GPG-KEY*`
+  - Go proxy `/@v/list` and `/@latest`
   - directory listings
 - **Packages** (`*.rpm`, `*.deb`, hash-named repodata, `by-hash/`) are cached for 30 days and evicted after 60 days unused. Total size is capped at 110 GB, with 15 GB kept free.
 - On a connect error, timeout or 5xx, the request falls through to the next tier. Only the **last** tier may answer from a stale copy, so the order is primary, then fallback, then stale.
@@ -65,6 +70,18 @@ docker buildx build --build-arg PKG_CACHE=https://192.168.1.40 --build-arg PHPVE
 - Requires `rpm -K` to report `digests signatures OK`.
 - Installs with `--setopt=localpkg_gpgcheck=1`.
 
+**`nodesource MAJOR`** (added 2026-10-22) replaces `curl https://rpm.nodesource.com/setup_N.x | bash`:
+- writes `/etc/yum.repos.d/nodesource-nodejs.repo` with the ORIGIN baseurl, `gpgcheck=1` and `gpgkey=file:///usr/local/share/pkg-cache/RPM-GPG-KEY-nodesource` (key committed in `keys/pkg-cache/`);
+- with `PKG_CACHE` it is then rewritten like the other repos; `restore` puts the origin version back, so the shipped image keeps a normal NodeSource repo.
+
+**`go-env`** (added 2026-10-22): `eval "$(pkg-cache-repos.sh go-env)"` inside the RUN that runs `go mod download`/`go build`. Prints `GOPROXY=<cache>/goproxy|https://proxy.golang.org|direct` (`|` = fall through on ANY error) and `SSL_CERT_FILE=<state>/ca-bundle.pem`; nothing without `PKG_CACHE`. Modules stay verified by `go.sum` + sum.golang.org. End the RUN with `restore` (removes the bundle).
+
+**EL9**: `release-install epel|remi` picks the EL major from `rpm -E %rhel` (9 or 10); `RPM-GPG-KEY-EPEL-9` is committed.
+
+**Debian** (`apt` mode): `deb.debian.org/debian`, `deb.debian.org/debian-security` and `security.debian.org` (classic and deb822 `.sources`) are rewritten to `<cache>/debian/` and `<cache>/debian-security/`.
+
+**Not proxied, on purpose:** PyPI and the npm registry. Our pip/npm installs are not hash-locked (`pip install -r` without `--require-hashes`, `npm install -g pm2@latest`), so the client would trust whatever the cache served — a compromised cache would mean code execution in shipped images. Proxy them only after the installs are hash-pinned. GitHub-release downloads are likewise left direct.
+
 **`restore`**:
 - Puts rewritten files back.
 - Deletes files the script created.
@@ -75,9 +92,31 @@ Every RUN that rewrites ends with `restore`, so no shipped layer carries the LAN
 
 `PKG_CACHE` must start with `https://`. `http://` is refused.
 
-`Dockerfile.litespeed` and `Dockerfile.lsphp` are **not wired yet**. Two things are needed first:
-- the multi-stage `lsphp-apt-upgrade.sh` flow needs a `PKG_CACHE` ARG in each stage;
-- its madison check must accept the cache URL. It currently requires `*rpms.litespeedtech.com*`, and via the cache madison shows `https://192.168.1.40/litespeed/debian`.
+`Dockerfile.litespeed` and `Dockerfile.lsphp` are wired since 2026-10-22 (normal apt path; the php.net EMERGENCY stage `lsphp-src` stays on upstream). `lsphp-apt-upgrade.sh`'s madison gate accepts `<PKG_CACHE>/litespeed/` only when `PKG_CACHE` is set.
+
+## Repositories wired (2026-10-22)
+
+The script and `keys/pkg-cache/` are **canonical here**; every other repo carries byte-identical copies (`sha256sum scripts/pkg-cache-repos.sh` to compare). Change it here first, then sync. Same for `.gitea/scripts/resolve-base-image.sh`.
+
+| Repo | Image(s) | Bases | Through the cache | Base digest-pinned |
+|---|---|---|---|---|
+| cloud-apache-container | cac, cac-fpm, shared-httpd (almalinux/10-base); shared-ols, cac-litespeed, cac-lsphp (litespeedtech/openlitespeed) | Docker Hub | AlmaLinux/EPEL/Remi (rpm); Ubuntu + LiteSpeed (apt) | yes, all 6 jobs |
+| cloud-node-container | cnoc:node18..26 | almalinux/10-base | AlmaLinux/EPEL + NodeSource (`nodesource N`) | yes |
+| cloud-memcached-container | cmc | almalinux/9-base | AlmaLinux 9 + EPEL 9 | yes |
+| cloud-haproxy-container | chc | almalinux/9-base | AlmaLinux 9 + EPEL 9 (inotify-tools GitHub tarball direct) | yes |
+| whp-default-container | whp-default | httpd:alpine | nothing to install (mirror only) | yes |
+| versitygw-container | versitygw | ubuntu:latest | Ubuntu (versitygw .deb from GitHub direct) | yes |
+| haproxy-manager-base | haproxy-manager-base, coraza-spoa | repo.anhonesthost.net python:3.12-slim / golang:1.25 (not Docker Hub: no mirror); gcr.io distroless | Debian (apt) + Go modules (`go-env`); pip direct | n/a; `mirror-base-image.yaml` now copies Docker Hub images by the digest resolved directly from Docker Hub |
+| cpanel-importer | cpanel-importer | almalinux:10-minimal | AlmaLinux/EPEL/Remi — **PR #1 open, not merged** (pending rebase onto the PHP 8.5 work) | in the PR |
+
+Not image builds (nothing to wire): kb-anhonesthost, anhonesthost-blog, dao-mail-signup, renovate-runner. ols-mail-client builds images in CI only for scanning/smoke tests (never pushed), its bases are already digest-pinned, and they install no OS packages.
+
+## Adding a new upstream
+
+1. On CT130: back up, then add the prefix to `UPSTREAMS` in `/usr/local/sbin/pkgcache-gen-nginx` (origin first; add a mirror tier only if you measured it is as fresh as the origin). If its mutable metadata isn't covered by `META_RE`, extend it there AND in `/usr/local/sbin/pkgcache-refresh`. Add the prefix to the `location = /` text in `/etc/nginx/pkgcache/server-common.conf`.
+2. `pkgcache-gen-nginx > /etc/nginx/sites-available/pkgcache && nginx -t && systemctl reload nginx` (`pct exec` has no /usr/local/sbin in PATH: use full paths). Verify old and new prefixes with `curl --cacert keys/pkg-cache/ca.crt https://192.168.1.40/<prefix>/...` (look at `X-Cache-Status`/`X-Pkgcache-Tier`). CT130 has no egress filter, so no firewall change is needed for new origins.
+3. Only proxy upstreams whose content the CLIENT verifies end to end (GPG-signed packages/metadata, Go sumdb, content digests). Commit any signing key under `keys/pkg-cache/` with its fingerprint and provenance in the README.
+4. Teach `scripts/pkg-cache-repos.sh` the rewrite (keep the origin as a fallback where the client supports it), test through the cache from a runner-network host, then sync the copies.
 
 ## Trust model
 
@@ -174,8 +213,7 @@ Hub, direct)"**:
 - Log lines to look for: `base-image: almalinux/10-base:latest -> almalinux/10-base@sha256:...`
   and `pkg-cache: repos=https://192.168.1.40 registry-mirror=192.168.1.40:5000`.
 
-Applied to: Build-and-Push, Build-FPM-Images, Build-Shared-httpd, Build-Shared-OLS
-(`litespeedtech/openlitespeed:${OLS_VERSION}-lsphp${PHPVER}`) here, and cloud-node-container.
+Applied to every job here (Build-and-Push, FPM, Shared-httpd, Shared-OLS, LiteSpeed, LSPHP) and to every other repo with a Docker Hub base (see "Repositories wired").
 The script is canonical here (`.gitea/scripts/resolve-base-image.sh`); other repos
 carry byte-identical copies.
 
diff --git a/keys/pkg-cache/README b/keys/pkg-cache/README
index bdcc04b..c8edeec 100644
--- a/keys/pkg-cache/README
+++ b/keys/pkg-cache/README
@@ -18,3 +18,15 @@ RPM-GPG-KEY-remi2024   Remi's RPM repository 2024 CF1D F005 7CE8 5DFF 5B2F 2A37
                        Remi rotates keys (remi2025, ...): when remi-release starts being
                        signed by a new key, `release-install remi` fails loudly - add the
                        new key here (and to pkg-cache-repos.sh).
+RPM-GPG-KEY-EPEL-9     Fedora (epel9) FF8A D134 4597 106E CE81 3B91 8A38 72BF 3228 467C
+                       fetched 2026-10-22 over HTTPS from dl.fedoraproject.org and
+                       mirror.math.princeton.edu (identical); used by `release-install epel`
+                       on EL9 images (cloud-memcached-container, cloud-haproxy-container).
+RPM-GPG-KEY-nodesource Nodesource Operations <operations@nodesource.com>
+                       242B 8138 31AF 0956 2B6C 46F7 6B88 DA4E 3AF2 8A14 (rsa4096, 2023-12-22)
+                       fetched 2026-10-22 over HTTPS from
+                       https://rpm.nodesource.com/gpgkey/ns-operations-public.key (the key
+                       NodeSource's own setup_N.x scripts reference); verified by dnf
+                       gpgcheck against the nodejs RPMs. Not on keys.openpgp.org /
+                       keyserver.ubuntu.com - confirm out of band. Used by
+                       `pkg-cache-repos.sh nodesource MAJOR` (cloud-node-container).
diff --git a/keys/pkg-cache/RPM-GPG-KEY-EPEL-9 b/keys/pkg-cache/RPM-GPG-KEY-EPEL-9
new file mode 100644
index 0000000..234c12f
--- /dev/null
+++ b/keys/pkg-cache/RPM-GPG-KEY-EPEL-9
@@ -0,0 +1,29 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mQINBGE3mOsBEACsU+XwJWDJVkItBaugXhXIIkb9oe+7aadELuVo0kBmc3HXt/Yp
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+/yEo/Ushyz6CVYxN8DGgcy2M9JOsnmjDx02h6qgWGWDuKgb9jZrvRedpAQCeemEd
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+r4ArVJYX5LrswnWEQMOelugUG6S3ZjMfcyOa/O0364iY73vyVgaYK+2XtT2usMux
+VL469Kj5m13T6w==
+=Mjs/
+-----END PGP PUBLIC KEY BLOCK-----
diff --git a/keys/pkg-cache/RPM-GPG-KEY-nodesource b/keys/pkg-cache/RPM-GPG-KEY-nodesource
new file mode 100644
index 0000000..0618885
--- /dev/null
+++ b/keys/pkg-cache/RPM-GPG-KEY-nodesource
@@ -0,0 +1,52 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mQINBGWFsqMBEAC4YlSuNpHjOiQVTC8StolVx3J8E9SC6G4wmVWbytMD1Zivfanj
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+oSVkzT/Mwp9zFVQu5w==
+=drMP
+-----END PGP PUBLIC KEY BLOCK-----
diff --git a/scripts/lsphp-apt-upgrade.sh b/scripts/lsphp-apt-upgrade.sh
index 6f59090..88c123d 100755
--- a/scripts/lsphp-apt-upgrade.sh
+++ b/scripts/lsphp-apt-upgrade.sh
@@ -18,7 +18,8 @@
 ## Fails LOUDLY — never ships the base image's PHP by accident:
 ##   * `apt-get update --error-on=any`: plain `apt-get update` only WARNS when a
 ##     repo is unreachable and carries on with no/old lists, exit 0.
-##   * the LiteSpeed repo must be the candidate source for lsphp${PHPVER}.
+##   * the LiteSpeed repo must be the candidate source for lsphp${PHPVER}
+##     (rpms.litespeedtech.com, or ${PKG_CACHE}/litespeed/ when PKG_CACHE is set).
 ##   * after upgrading, no lsphp${PHPVER}* package may remain upgradable.
 ##   * if CI passed the version it resolved from the repo index (EXPECT_LSPHP_PKG,
 ##     EXPECT_PHP_VERSION), the installed package / running PHP must match it;
@@ -52,8 +53,18 @@ echo "lsphp-apt-upgrade: base image lsphp${PHPVER}=$(dpkg-query -W -f='${Version
 # Read each output into a variable and match in the shell: piping into an
 # early-exit reader (grep -q, awk ... exit) under pipefail can SIGPIPE the writer
 # and report "missing" for a package that is there (scripts/tests/lsphp-info-probe.test.sh).
+# With the internal package cache (PKG_CACHE build-arg, scripts/pkg-cache-repos.sh
+# apt) the LiteSpeed source reads ${PKG_CACHE}/litespeed/... instead; that URL is
+# accepted ONLY when PKG_CACHE is set, and only under its /litespeed/ path.
 MADISON=$(apt-cache madison "lsphp${PHPVER}")
-if [[ "$MADISON" != *rpms.litespeedtech.com* ]]; then
+LS_REPO_OK=0
+if [[ "$MADISON" == *rpms.litespeedtech.com* ]]; then
+    LS_REPO_OK=1
+elif [ -n "${PKG_CACHE:-}" ] && [[ "$MADISON" == *"${PKG_CACHE%/}/litespeed/"* ]]; then
+    LS_REPO_OK=1
+    echo "lsphp-apt-upgrade: LiteSpeed repo via package cache ${PKG_CACHE%/}/litespeed/"
+fi
+if [ "$LS_REPO_OK" != 1 ]; then
     apt-cache policy "lsphp${PHPVER}" >&2 || true
     die "the LiteSpeed apt repo does not offer lsphp${PHPVER} (repo missing from sources, or its index is empty)."
 fi
diff --git a/scripts/pkg-cache-repos.sh b/scripts/pkg-cache-repos.sh
index 37580a0..ee2bd7c 100755
--- a/scripts/pkg-cache-repos.sh
+++ b/scripts/pkg-cache-repos.sh
@@ -4,11 +4,16 @@
 ## when PKG_CACHE is set; without it the repo files are left alone and builds
 ## use the upstream repositories as before.
 ##
-##   PKG_CACHE=https://192.168.1.40 pkg-cache-repos.sh rpm      # AlmaLinux/EPEL/Remi
-##   PKG_CACHE=https://192.168.1.40 pkg-cache-repos.sh apt      # Ubuntu + LiteSpeed
-##   pkg-cache-repos.sh release-install epel [remi]             # GPG-verified release RPMs
+##   PKG_CACHE=https://192.168.1.40 pkg-cache-repos.sh rpm      # AlmaLinux/EPEL/Remi/NodeSource
+##   PKG_CACHE=https://192.168.1.40 pkg-cache-repos.sh apt      # Ubuntu, Debian, LiteSpeed
+##   pkg-cache-repos.sh release-install epel [remi]             # GPG-verified release RPMs (EL9/EL10)
+##   pkg-cache-repos.sh nodesource MAJOR                        # NodeSource repo file + pinned key
+##   eval "$(pkg-cache-repos.sh go-env)"                        # GOPROXY via the cache (go.sum/sumdb verified)
 ##   pkg-cache-repos.sh restore                                 # undo everything above
 ##
+## CANONICAL copy: cloud-apache-container/scripts/pkg-cache-repos.sh (docs/pkg-cache.md
+## there). Other repos carry byte-identical copies - change it there first.
+##
 ## Every RUN that rewrites must `restore` before it ends: it puts rewritten files
 ## back, deletes files this script created, deletes any NEW repo/apt file that
 ## still references the cache, then FAILS if any reference is left — so no shipped
@@ -43,7 +48,7 @@
 ##      cache (with the CA), and a build without PKG_CACHE uses upstream sources.
 set -euo pipefail
 
-MODE="${1:?usage: pkg-cache-repos.sh rpm|apt|release-install NAME...|restore}"
+MODE="${1:?usage: pkg-cache-repos.sh rpm|apt|release-install NAME...|nodesource MAJOR|go-env|restore}"
 shift || true
 STATE=/var/lib/pkg-cache-repos          # saved originals + manifest + created files
 SHARE="${PKG_CACHE_SHARE:-/usr/local/share/pkg-cache}"   # ca.crt + RPM-GPG-KEY-*
@@ -57,10 +62,22 @@ if [ -n "$C" ]; then
         https://*) ;;
         *) die "PKG_CACHE must be an https:// URL (plain http is refused), got '$C'" ;;
     esac
+    [[ "$C" =~ ^https://[A-Za-z0-9.-]+(:[0-9]+)?(/[A-Za-z0-9._/-]*)?$ ]] || die "PKG_CACHE has unexpected characters: '$C'"
     HOSTPORT="${C#https://}"; HOSTPORT="${HOSTPORT%%/*}"
     [ -s "$SHARE/ca.crt" ] || die "PKG_CACHE set but $SHARE/ca.crt (pkg-cache CA) is missing"
 fi
 
+# System CA bundle (EL vs Debian/Ubuntu path); the pkg-cache CA is appended to a
+# copy in the state dir, never to the system store.
+sys_bundle() {
+    local b
+    for b in /etc/pki/tls/certs/ca-bundle.crt /etc/ssl/certs/ca-certificates.crt; do
+        [ -s "$b" ] && { echo "$b"; return 0; }
+    done
+    die "no system CA bundle found"
+}
+make_bundle() { cat "$(sys_bundle)" "$SHARE/ca.crt" > "$STATE/ca-bundle.pem"; }
+
 # Files that may hold repo configuration; restore re-checks all of them.
 repo_files() {
     find /etc/yum.repos.d /etc/dnf /etc/apt -type f 2>/dev/null | sort || true
@@ -112,18 +129,20 @@ if [ "$MODE" = release-install ]; then
     curl_opts=(-fsS --proto '=https' --retry 5 --retry-all-errors --max-time 120)
     if [ -n "$C" ]; then
         start_session
-        cat /etc/pki/tls/certs/ca-bundle.crt "$SHARE/ca.crt" > "$STATE/ca-bundle.pem"
+        make_bundle
         curl_opts+=(--cacert "$STATE/ca-bundle.pem")
     fi
     files=()
+    el=$(rpm -E '%{?rhel}' 2>/dev/null || true)
+    case "$el" in 9|10) ;; *) die "release-install supports EL9/EL10 only (rpm -E %rhel = '$el')" ;; esac
     for name in "$@"; do
         case "$name" in
-            epel) pkg=epel-release key=RPM-GPG-KEY-EPEL-10
-                  path=/epel/epel-release-latest-10.noarch.rpm
-                  origin=https://dl.fedoraproject.org/pub/epel/epel-release-latest-10.noarch.rpm ;;
+            epel) pkg=epel-release key=RPM-GPG-KEY-EPEL-$el
+                  path=/epel/epel-release-latest-$el.noarch.rpm
+                  origin=https://dl.fedoraproject.org/pub/epel/epel-release-latest-$el.noarch.rpm ;;
             remi) pkg=remi-release key=RPM-GPG-KEY-remi2024
-                  path=/remi/enterprise/remi-release-10.rpm
-                  origin=https://rpms.remirepo.net/enterprise/remi-release-10.rpm ;;
+                  path=/remi/enterprise/remi-release-$el.rpm
+                  origin=https://rpms.remirepo.net/enterprise/remi-release-$el.rpm ;;
             *) die "unknown release package '$name'" ;;
         esac
         url="$origin"; [ -n "$C" ] && url="$C$path"
@@ -142,14 +161,14 @@ if [ "$MODE" = release-install ]; then
     exit 0
 fi
 
-if [ -z "$C" ]; then
+if [ -z "$C" ] && [ "$MODE" != nodesource ] && [ "$MODE" != go-env ]; then
     echo "pkg-cache-repos($MODE): PKG_CACHE not set - using upstream repositories"
     exit 0
 fi
 
 rewrite_rpm() {
     local f="$1"
-    grep -q -E '^#? ?baseurl=https?://(repo\.almalinux\.org|download\.example|rpms\.remirepo\.net)/' "$f" || return 0
+    grep -q -E '^#? ?baseurl=https?://(repo\.almalinux\.org|download\.example|rpms\.remirepo\.net|rpm\.nodesource\.com)/' "$f" || return 0
     save "$f"
     # Per [section]: a (commented or live) baseurl on a known origin becomes
     # "baseurl=<cache>/<prefix>/<path> <origin>/<path>"; that section's
@@ -185,6 +204,8 @@ rewrite_rpm() {
                 l = rw(l, "^#? ?baseurl=https?://repo\\.almalinux\\.org/almalinux/", "almalinux", "https://repo.almalinux.org/almalinux", 1)
                 l = rw(l, "^#? ?baseurl=https?://download\\.example/pub/epel/", "epel", "https://dl.fedoraproject.org/pub/epel", 0)
                 l = rw(l, "^#? ?baseurl=https?://rpms\\.remirepo\\.net/", "remi", "https://rpms.remirepo.net", 1)
+                # NodeSource signs its RPMs but not repomd.xml (404): gpgcheck only.
+                l = rw(l, "^#? ?baseurl=https?://rpm\\.nodesource\\.com/", "nodesource", "https://rpm.nodesource.com", 0)
             }
             buf[++n] = l
         }
@@ -194,19 +215,65 @@ rewrite_rpm() {
 
 rewrite_apt() {
     local f="$1"
-    grep -q -E 'https?://([a-z]{2}\.)?(archive|security)\.ubuntu\.com/|https?://rpms\.litespeedtech\.com/' "$f" || return 0
+    grep -q -E 'https?://([a-z]{2}\.)?(archive|security)\.ubuntu\.com/|https?://rpms\.litespeedtech\.com/|https?://(deb|security)\.debian\.org/' "$f" || return 0
     save "$f"
+    # Debian: debian-security first, and "debian" only as a whole path segment,
+    # so .../debian-security is never rewritten as /debian/.
     sed -i -E \
         -e "s%https?://(archive|[a-z]{2}\.archive)\.ubuntu\.com/ubuntu/?%$C/ubuntu/%g" \
         -e "s%https?://security\.ubuntu\.com/ubuntu/?%$C/ubuntu-security/%g" \
         -e "s%https?://rpms\.litespeedtech\.com/%$C/litespeed/%g" \
+        -e "s%https?://(deb|security)\.debian\.org/debian-security/?([[:space:]]|\$)%$C/debian-security/\\2%g" \
+        -e "s%https?://security\.debian\.org/?([[:space:]]|\$)%$C/debian-security/\\1%g" \
+        -e "s%https?://deb\.debian\.org/debian/?([[:space:]]|\$)%$C/debian/\\1%g" \
         "$f"
 }
 
+if [ "$MODE" = go-env ]; then
+    # Prints shell exports for `eval`. Without PKG_CACHE: nothing (Go defaults).
+    # GOPROXY "a|b" falls through on ANY error, so a dead cache costs one
+    # failed request, not the build. GOSUMDB stays the default sum.golang.org,
+    # reached directly: modules are still verified against go.sum + the sumdb.
+    [ -n "$C" ] || { echo "pkg-cache-repos(go-env): PKG_CACHE not set - default GOPROXY" >&2; exit 0; }
+    start_session
+    make_bundle
+    printf "export GOPROXY='%s/goproxy|https://proxy.golang.org|direct' SSL_CERT_FILE='%s'\n" "$C" "$STATE/ca-bundle.pem"
+    echo "pkg-cache-repos(go-env): GOPROXY via $C/goproxy (fallback proxy.golang.org)" >&2
+    exit 0
+fi
+
+if [ "$MODE" = nodesource ]; then
+    # Replaces `curl https://rpm.nodesource.com/setup_N.x | bash` (unverified
+    # remote script): writes the same nodesource-nodejs repo (origin URL, so the
+    # shipped image keeps a normal repo file) with gpgcheck=1 and the signing key
+    # committed in keys/pkg-cache/; with PKG_CACHE it is then rewritten like any
+    # other repo and `restore` puts the origin version back.
+    major="${1:?usage: pkg-cache-repos.sh nodesource MAJOR}"
+    [[ "$major" =~ ^[0-9]{1,3}$ ]] || die "bad Node major '$major'"
+    key="$SHARE/RPM-GPG-KEY-nodesource"
+    [ -s "$key" ] || die "missing $key"
+    rpm --import "$key" || die "cannot import $key"
+    rm -f /etc/yum.repos.d/nodesource*.repo
+    f=/etc/yum.repos.d/nodesource-nodejs.repo
+    printf '%s\n' "[nodesource-nodejs]" \
+        "name=Node.js Packages for Linux RPM based distros - \$basearch" \
+        "baseurl=https://rpm.nodesource.com/pub_${major}.x/nodistro/nodejs/\$basearch" \
+        "priority=9" "enabled=1" "gpgcheck=1" \
+        "gpgkey=file://$key" "module_hotfixes=1" > "$f"
+    echo "pkg-cache-repos: wrote $f (Node ${major}.x, key $(basename "$key"))"
+    if [ -n "$C" ]; then
+        start_session
+        make_bundle
+        rewrite_rpm "$f"
+        grep -h '^baseurl=' "$f" | sed 's/^/  /'
+    fi
+    exit 0
+fi
+
 case "$MODE" in
     rpm)
         start_session
-        cat /etc/pki/tls/certs/ca-bundle.crt "$SHARE/ca.crt" > "$STATE/ca-bundle.pem"
+        make_bundle
         for f in /etc/yum.repos.d/*.repo; do [ -f "$f" ] && rewrite_rpm "$f"; done
         echo "pkg-cache-repos(rpm): repos now via $C:"
         grep -h '^baseurl=' /etc/yum.repos.d/*.repo | grep -F "$C/" | sort -u | sed 's/^/  /'
@@ -221,7 +288,9 @@ case "$MODE" in
             [ -f "$f" ] && rewrite_apt "$f"
         done
         echo "pkg-cache-repos(apt): sources now via $C:"
-        grep -h -E '^(deb|URIs:)' /etc/apt/sources.list /etc/apt/sources.list.d/* 2>/dev/null | grep -F "$C/" | sort -u | sed 's/^/  /'
+        # (|| true: Debian 13 images have no /etc/apt/sources.list; grep's exit 2
+        # for the missing file must not fail the build under pipefail)
+        { grep -h -E '^(deb|URIs:)' /etc/apt/sources.list /etc/apt/sources.list.d/* 2>/dev/null || true; } | grep -F "$C/" | sort -u | sed 's/^/  /' || true
         ;;
     *) die "unknown mode '$MODE'" ;;
 esac