feat (CI): add new github-docker CI workflow to build, test and push images

Author: MRColorR

.github/workflows/docker-ci.yml

@@ -0,0 +1,100 @@
+name: Build, Test & Push images
+
+on:
+  push:
+    tags:
+      - "*.*.*"   # e.g., 1.0.0, 2.1.3
+  workflow_dispatch:
+
+env:
+  IMAGE_NAME: ${{ vars.IMAGE_NAME }}
+  PLATFORMS: ${{ vars.PLATFORMS }}
+
+jobs:
+  build-test-push:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: true
+      matrix:
+        include:
+          - variant: debian
+            dockerfile: ./debian.dockerfile
+            tag: debian
+            latest: true
+          - variant: alpine
+            dockerfile: ./alpine.dockerfile
+            tag: alpine
+            latest: false
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Determine tag name
+        id: vars
+        run: echo "VERSION_TAG=${GITHUB_REF_NAME}" >> $GITHUB_OUTPUT
+
+      - name: Extract OCI metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=${{ matrix.tag }}
+            type=raw,value=${{ matrix.tag }}-${{ steps.vars.outputs.VERSION_TAG }}
+            ${{ matrix.latest && format('type=raw,value=latest') || '' }}
+          labels: |
+            org.opencontainers.image.title=VNC Browser (${{ matrix.tag }})
+            org.opencontainers.image.version=${{ steps.vars.outputs.VERSION_TAG }}
+            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
+            org.opencontainers.image.revision=${{ github.sha }}
+
+      - name: Build ${{ matrix.variant }} image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ${{ matrix.dockerfile }}
+          platforms: ${{ env.PLATFORMS }}
+          push: false
+          load: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Test container startup
+        run: |
+          docker run -d --rm --name test-${{ matrix.tag }} \
+            -p 5900:5900 -p 6080:6080 \
+            -e VNC_PASSWORD=testpass \
+            ${{ env.IMAGE_NAME }}:${{ matrix.tag }}
+          echo "Waiting for container to start..."
+          sleep 10
+          docker ps
+          curl -sSf http://localhost:6080 > /dev/null
+          echo "Test passed for ${{ matrix.tag }}"
+
+      - name: Push image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ${{ matrix.dockerfile }}
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max