Add expose ports layer (#534)

With this PR, I’m adding a layer to the final image to expose the apps
ports. This fixes the visibility of the applications when it’s run as a
service in GitLab CI.

There was a previous PR (#279)
where these ports were added. However, during the CI/CD update
(#444) they were removed,
likely to keep the Dockerfile more universal.

Author: greeddj

.github/workflows/release.yml

@@ -58,9 +58,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        app:
-          - pebble
-          - pebble-challtestsrv
+        include:
+        - app: pebble
+          expose_ports: "14000 15000"
+        - app: pebble-challtestsrv
+          expose_ports: "5001 5002 5003 8053 8055 8443"
     steps:
       - uses: actions/checkout@v5
       - name: Download ${{ matrix.app }} artifacts
@@ -96,7 +98,9 @@ jobs:
       - name: Build and push ${{ github.repository }}/${{ matrix.app }} for ${{ env.DOCKER_PLATFORMS }}
         uses: docker/build-push-action@v5
         with:
-          build-args: APP=${{ matrix.app }}
+          build-args: |
+            APP=${{ matrix.app }}
+            EXPOSE_PORTS=${{ matrix.expose_ports }}
           build-contexts: dist-files=/tmp/dist
           cache-from: type=gha
           cache-to: type=gha,mode=max

Dockerfile.release

@@ -27,5 +27,8 @@ ENTRYPOINT [ "/app.exe" ]
 
 # Final stage: dynamically select between Linux and Windows stages based on TARGETOS argument
 FROM ${TARGETOS} AS final
+ARG EXPOSE_PORTS
+# Expose the specified ports
+EXPOSE ${EXPOSE_PORTS}
 # Add test configuration files
 COPY ./test/ /test/