initial Docker build commit

.gitea/workflows/build.yaml

@@ -2,14 +2,48 @@ name: "Build image"
 on: [push]
 
 env: {}
+permissions:
+  packages: write
 
 jobs:
-  build:
-    name: Build
+  build-frontend:
+    name: Build base frontend image
     runs-on: ubuntu-latest
+    outputs:
+      UI_HASH: ${{ steps.git-parse.outputs.PULP_UI_COMMIT }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3
         with:
           submodules: true
+      - name: Fetch commit hash for Pulp UI repository
+        id: git-parse
+        run: |
+          echo "PULP_UI_COMMIT=$(git -C vendor/pulp-ui rev-parse HEAD)" >> $GITEA_OUTPUT
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Log in to built-in registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ gitea.server_url }}
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.GITEA_TOKEN }}
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ gitea.server_url }}/${{ gitea.repository }}
+          tags: |
+            type=sha,format=short
+            type=semver,pattern=${{ steps.git-parse.outputs.PULP_UI_COMMIT }}
+      - name: Build frontend image
+        uses: docker/build-push-action@v6
+        with:
+          context: vendor/pulp-ui
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+# TODO: add build nginx image