Gitea workflow configuration and Dockerfile

.gitea/workflows/build-container.yaml

@@ -0,0 +1,65 @@
+# Gitea Actions workflow for building the Zola build container
+# This workflow builds and pushes the container image to Gitea's container registry
+#
+# Place this file and Dockerfile in the metadata repository:
+#   .gitea/workflows/build-container.yaml
+#   Dockerfile (in repo root)
+#
+# Triggers:
+#   - When Dockerfile changes
+#   - Manual dispatch
+#
+# The built image will be available at:
+#   <gitea-url>/<owner>/<repo>/zola-pwsh-s3:latest
+
+name: Build Container Image
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "Dockerfile"
+  workflow_dispatch:
+
+env:
+  IMAGE_NAME: zola-pwsh-s3
+  REGISTRY: ${{ gitea.server_url }}
+
+jobs:
+  build-container:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.GITEA_TOKEN }}
+
+      - name: Extract metadata for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ gitea.repository }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=latest
+            type=sha,prefix=
+
+      - name: Build and push container image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max