First attempt with workflows

.gitea/workflows/build-and-push.yaml

@@ -0,0 +1,90 @@
+name: Build & Push Docker image
+
+on:
+  # Trigger on pushes to main or release branches, and on manual workflow dispatch
+  push:
+    branches:
+      - main
+      - 'release/**'
+      - 'beta/**'
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    environment: production
+    steps:
+      
+      # ------------------------------------------------------------------
+      # 1. Checkout repository
+      # ------------------------------------------------------------------
+      - name: Checkout source
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0   # needed for git rev‑parse and tag generation
+      
+      # ------------------------------------------------------------------
+      # 2. Set up Docker Buildx (optional, but recommended for multi‑arch)
+      # ------------------------------------------------------------------
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      
+      # ------------------------------------------------------------------
+      # 3. Log in to the Gitea container registry
+      # ------------------------------------------------------------------
+      - name: Log in to Gitea registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ secrets.REGISTRY_HOST }}          # e.g. registry.example.com
+          username: ${{ secrets.REGISTRY_USER }}          # e.g. admin
+          password: ${{ secrets.REGISTRY_PASSWORD }}      # e.g. <api‑token>
+      
+      # ------------------------------------------------------------------
+      # 4. Build the Docker image
+      # ------------------------------------------------------------------
+      - name: Build image
+        id: build
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile
+          # do not push yet
+          push: false
+          tags: |
+            ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:${{ github.sha }}
+            ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:${{ github.ref_name }}
+            ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:latest
+          build-args: |
+            # Add any build args here
+            # ARG_NAME=VALUE
+      
+      # ------------------------------------------------------------------
+      # 5. Push the image to the registry
+      # ------------------------------------------------------------------
+      - name: Push image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile
+          push: true
+          tags: |
+            ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:${{ github.sha }}
+            ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:${{ github.ref_name }}
+            ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:latest
+      
+      # ------------------------------------------------------------------
+      # 6. (Optional) Clean up local Docker cache
+      # ------------------------------------------------------------------
+      - name: Docker system prune
+        run: docker system prune -f
+        if: ${{ always() }}
+      
+      # ------------------------------------------------------------------
+      # 7. Output useful info
+      # ------------------------------------------------------------------
+      - name: Show pushed image tags
+        run: |
+          echo "Pushed image tags:"
+          echo "- ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:${{ github.sha }}"
+          echo "- ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:${{ github.ref_name }}"
+          echo "- ${{ secrets.REGISTRY_HOST }}/${{ github.repository }}:latest"