fix(ci): update dev image build process and simplify test execution

.gitea/workflows/test.yml

@@ -8,6 +8,7 @@ on:
 
 env:
   REGISTRY: git.arthurerlich.de
+  DEV_IMAGE: git.arthurerlich.de/${{ gitea.repository }}:ci-${{ gitea.sha }}
 
 jobs:
   build-dev:
@@ -26,24 +27,17 @@ jobs:
           username: ${{ gitea.actor }}
           password: ${{ secrets.REGISTRY_TOKEN }}
 
-      - name: Build dev image (PHP 8.4 + composer deps)
+      - name: Build and push dev image (PHP 8.4 + composer deps)
         uses: docker/build-push-action@v5
         with:
           context: .
           file: Dockerfile.dev
           target: dev
-          outputs: type=docker,dest=/tmp/graph-dev.tar
-          tags: graph-dev:ci
+          push: true
+          tags: ${{ env.DEV_IMAGE }}
           cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ gitea.repository }}:buildcache-dev
           cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ gitea.repository }}:buildcache-dev,mode=max
 
-      - name: Upload dev image
-        uses: actions/upload-artifact@v3
-        with:
-          name: graph-dev-image
-          path: /tmp/graph-dev.tar
-          retention-days: 1
-
   build-prod:
     needs: build-dev
     runs-on: ubuntu-latest
@@ -65,31 +59,17 @@ jobs:
   test:
     needs: build-dev
     runs-on: ubuntu-latest
+    container:
+      image: ${{ env.DEV_IMAGE }}
+      credentials:
+        username: ${{ gitea.actor }}
+        password: ${{ secrets.REGISTRY_TOKEN }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Download dev image
-        uses: actions/download-artifact@v3
-        with:
-          name: graph-dev-image
-          path: /tmp
-
-      - name: Load dev image
-        run: docker load --input /tmp/graph-dev.tar
-
-      - name: Debug workspace
+      - name: Run tests
         run: |
-          echo "pwd: $(pwd)"
-          echo "GITHUB_WORKSPACE: $GITHUB_WORKSPACE"
-          ls -la
-
-      - name: Run tests in dev image
-        run: |
-          docker run --rm -v "$(pwd)":/app -v /app/vendor graph-dev:ci sh -c "
-            echo '--- /app contents ---' &&
-            ls -la /app &&
-            composer install --no-interaction &&
-            vendor/bin/phpunit --testdox &&
+          composer install --no-interaction
+          vendor/bin/phpunit --testdox
           composer phpstan
-          "