feat(ci): add GitHub Actions workflow for testing and Docker builds

.gitea/workflows/docker-publish.yml

@@ -19,6 +19,9 @@ on:
         required: true
         type: string
 
+env:
+  REGISTRY: git.arthurerlich.de
+
 jobs:
   build-push:
     runs-on: ubuntu-latest
@@ -40,12 +43,6 @@ jobs:
           fi
           git checkout "refs/tags/${{ inputs.tag }}"
 
-      # Strip the protocol from the server URL to get the registry hostname.
-      # e.g. https://gitea.example.com → gitea.example.com
-      - name: Derive registry hostname
-        run: |
-          echo "REGISTRY=$(echo '${{ gitea.server_url }}' | sed 's|https://||;s|http://||')" >> $GITHUB_ENV
-
       # Generates OCI-compliant tags and labels from the provided release tag.
       # 1.2.3 → image tags: 1.2.3 / 1.2 / 1
       - name: Extract Docker metadata

.gitea/workflows/test.yml

@@ -0,0 +1,62 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "8.4"
+          extensions: intl, zip, opcache
+          coverage: none
+
+      - name: Cache Composer dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.composer/cache
+          key: composer-${{ hashFiles('composer.lock') }}
+          restore-keys: composer-
+
+      - name: Install dependencies
+        run: composer install --no-interaction --prefer-dist
+
+      - name: Run PHPUnit
+        run: vendor/bin/phpunit --testdox
+
+      - name: Run PHPStan
+        run: composer phpstan
+
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build prod image (final target)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile
+          target: final
+          push: false
+
+      - name: Build dev image (dev target)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile.dev
+          target: dev
+          push: false

Dockerfile

@@ -30,8 +30,7 @@ FROM deps AS build
 COPY . .
 RUN composer dump-autoload --classmap-authoritative --no-dev --no-interaction && \
     mkdir -p var/cache var/log && \
-    APP_ENV=prod APP_SECRET=placeholder php bin/console cache:warmup --no-debug && \
-    composer dump-env prod
+    APP_ENV=prod APP_SECRET=placeholder php bin/console cache:warmup --no-debug
 
 # ── final (prod) stage — no composer binary ────────────────────────────────────
 FROM base AS final