DX: build-image.yaml with gitea actions

.changes/2.13.1.md

@@ -1,3 +1,5 @@
 ## 2.13.1 - 2026-09-17
 ### Fixed
 * Dockerfile: create cache directory for helm deployment
+### DX
+* Build image with gitea actions

.gitea/workflows/release/build-image.yaml

@@ -0,0 +1,47 @@
+name: build-images
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-push:
+    runs-on: cth-ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: https://github.com/actions/checkout@v4
+
+      - name: Log in to Docker Registry
+        uses: https://github.com/docker/login-action@v3
+        with:
+          registry: h3m6q87t.gra7.container-registry.ovh.net
+          username: ${{ vars.OVH_REGISTRY_USERNAME }}
+          password: ${{ secrets.OVH_REGISTRY_PASSWORD }}
+
+      - name: Install Dependencies and Build Assets
+        uses: docker://chill/base-image:8.4-edge
+        env:
+          APP_ENV: prod
+        with:
+          entrypoint: /bin/sh
+          # We install node/yarn inside the PHP container to ensure translations are available
+          args: -c "apk add --no-cache nodejs yarn && composer install --no-scripts --no-interaction && bin/console cache:clear && yarn install && yarn run encore production"
+
+      - name: Set up Docker Buildx
+        uses: https://github.com/docker/setup-buildx-action@v3
+
+      - name: Build and Push PHP Image
+        uses: https://github.com/docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile
+          push: true
+          tags: h3m6q87t.gra7.container-registry.ovh.net/chillbasics/php:${{ github.ref_name }}
+
+      - name: Build and Push Nginx Image
+        uses: https://github.com/docker/build-push-action@v5
+        with:
+          context: .
+          file: docker/nginx/Dockerfile
+          push: true
+          tags: h3m6q87t.gra7.container-registry.ovh.net/chillbasics/nginx:${{ github.ref_name }}