Allow user Entrypoint scripts (#5194)

* Allow user Entrypoint scripts

* Variable encapsulation

Co-authored-by: Asher <ash@coder.com>

* Check if Entrypoint Dir exists & run all executable

* Don't create entrypoint.d by default

* yarn fmt

* yarn fmt

* Fix for SC2044

* Revert "yarn fmt"

This reverts commit 5ca347f361.

Co-authored-by: Asher <ash@coder.com>

ci/release-image/entrypoint.sh

@@ -18,4 +18,10 @@ if [ "${DOCKER_USER-}" ]; then
   fi
 fi
 
+# Allow users to have scripts run on container startup to prepare workspace.
+# https://github.com/coder/code-server/issues/5177
+if [ -d "${ENTRYPOINTD}" ]; then
+  find "${ENTRYPOINTD}" -type f -executable -print -exec {} \;
+fi
+
 exec dumb-init /usr/bin/code-server "$@"