Fix Dockerfile build error - use dnf instead of yum for groupinstall

Changed 'yum groupinstall' to 'dnf group install -y' to match AlmaLinux 9
package manager and ensure non-interactive installation.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -6,7 +6,7 @@ RUN dnf install -y \
       https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm && \
     dnf update -y && \
     dnf install -y wget procps cronie iproute nginx openssl git microdnf make gcc gcc-c++ && \
-    yum groupinstall 'Development Tools' && \
+    dnf group install -y 'Development Tools' && \
     dnf clean all && \
     rm -rf /var/cache/dnf /usr/share/doc /usr/share/man /usr/share/locale/* \
            /var/cache/yum /tmp/* /var/tmp/*