ci(docker): add node image build-and-push job to workflow

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/docker.yml

@@ -84,3 +84,43 @@ jobs:
             git.lclr.dev/thibaud-lclr/ltbxd-actorle/database:${{ github.sha }}
           cache-from: type=registry,ref=git.lclr.dev/thibaud-lclr/ltbxd-actorle/database:buildcache
           cache-to: type=registry,ref=git.lclr.dev/thibaud-lclr/ltbxd-actorle/database:buildcache,mode=max
+
+  build-node:
+    name: Build node image
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Check if node image should be rebuilt
+        id: changed
+        run: |
+          CHANGED=$(git diff --name-only HEAD~1 HEAD | grep -E '^(docker/node/|assets/|package(-lock)?\.json|vite\.config\.js)' | wc -l)
+          echo "changed=$([ "$CHANGED" -gt 0 ] && echo true || echo false)" >> $GITHUB_OUTPUT
+
+      - name: Set up Docker Buildx
+        if: steps.changed.outputs.changed == 'true'
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Gitea registry
+        if: steps.changed.outputs.changed == 'true'
+        uses: docker/login-action@v3
+        with:
+          registry: git.lclr.dev
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITEA_TOKEN }}
+
+      - name: Build and push node
+        if: steps.changed.outputs.changed == 'true'
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: docker/node/Dockerfile
+          target: dev
+          push: true
+          tags: |
+            git.lclr.dev/thibaud-lclr/ltbxd-actorle/node:latest
+            git.lclr.dev/thibaud-lclr/ltbxd-actorle/node:${{ github.sha }}
+          cache-from: type=registry,ref=git.lclr.dev/thibaud-lclr/ltbxd-actorle/node:buildcache
+          cache-to: type=registry,ref=git.lclr.dev/thibaud-lclr/ltbxd-actorle/node:buildcache,mode=max