chore(docker): update Dockerfiles to remove steam user and set environment variables

* Added `USER root` to ensure proper permissions.
* Enhanced user removal command with logging for better visibility.
* Set `DEBIAN_FRONTEND` environment variable correctly.

Author: dgibbs64

.github/workflows/action-docker-publish.yml

@@ -107,7 +107,6 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
-
   build-ubuntu-2004:
     name: Build Ubuntu 20.04
     runs-on: ubuntu-latest
@@ -175,4 +174,4 @@ jobs:
     permissions:
       actions: write
     steps:
-      - uses: liskin/gh-workflow-keepalive@v1
+      - uses: liskin/gh-workflow-keepalive@v1

.vscode/settings.json

@@ -6,8 +6,13 @@
 
 FROM ghcr.io/gameservermanagers/steamcmd:ubuntu-20.04
 
+USER root
+
+## Remove steam user from upstream base image if present
+RUN if id -u steam >/dev/null 2>&1; then echo "Removing steam user from base image"; userdel -r steam || true; else echo "steam user not present"; fi
+
 LABEL maintainer="LinuxGSM <me@danielgibbs.co.uk>"
-ENV DEBIAN_FRONTEND noninteractive
+ENV DEBIAN_FRONTEND=noninteractive
 ENV TERM=xterm
 ENV LGSM_GITHUBUSER=GameServerManagers
 ENV LGSM_GITHUBREPO=LinuxGSM

Dockerfile.ubuntu-2004

@@ -6,8 +6,13 @@
 
 FROM ghcr.io/gameservermanagers/steamcmd:ubuntu-22.04
 
+USER root
+
+## Remove steam user from upstream base image if present
+RUN if id -u steam >/dev/null 2>&1; then echo "Removing steam user from base image"; userdel -r steam || true; else echo "steam user not present"; fi
+
 LABEL maintainer="LinuxGSM <me@danielgibbs.co.uk>"
-ENV DEBIAN_FRONTEND noninteractive
+ENV DEBIAN_FRONTEND=noninteractive
 ENV TERM=xterm
 ENV LGSM_GITHUBUSER=GameServerManagers
 ENV LGSM_GITHUBREPO=LinuxGSM

Dockerfile.ubuntu-2204

@@ -6,11 +6,13 @@
 
 FROM ghcr.io/gameservermanagers/steamcmd:ubuntu-24.04
 
+USER root
+
 ## Remove steam user from upstream base image if present
-RUN if id -u steam >/dev/null 2>&1; then userdel -r steam || true; fi
+RUN if id -u steam >/dev/null 2>&1; then echo "Removing steam user from base image"; userdel -r steam || true; else echo "steam user not present"; fi
 
 LABEL maintainer="LinuxGSM <me@danielgibbs.co.uk>"
-ENV DEBIAN_FRONTEND noninteractive
+ENV DEBIAN_FRONTEND=noninteractive
 ENV TERM=xterm
 ENV LGSM_GITHUBUSER=GameServerManagers
 ENV LGSM_GITHUBREPO=LinuxGSM