[COMPLIANCE] Add Copyright and License Headers (#1617)

* [COMPLIANCE] Add Copyright and License Headers

* chore: 🤖 update Copyright headers to satisfy our lint rules

---------

Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>
Co-authored-by: Cameron Perera <cameron.perera@hashicorp.com>

docker-compose-embedding.yml

@@ -1,3 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
 # Note: this will change the permissions of the files in this directory after
 # running to allow for easy deletion, so this should only be run as part of
 # boundary's build task.