refactor(ci): reorganize test workflow to streamline Docker image handling

.gitea/workflows/test.yml

@@ -7,7 +7,7 @@ on:
     branches: [main]
 
 jobs:
-  test:
+  build-dev:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -22,18 +22,19 @@ jobs:
           context: .
           file: Dockerfile.dev
           target: dev
-          load: true
+          outputs: type=docker,dest=/tmp/graph-dev.tar
           tags: graph-dev:ci
           cache-from: type=gha
           cache-to: type=gha,mode=max
 
-      - name: Run PHPUnit
-        run: docker run --rm graph-dev:ci vendor/bin/phpunit --testdox
-
-      - name: Run PHPStan
-        run: docker run --rm graph-dev:ci composer phpstan
-
-  docker-build:
+      - name: Upload dev image
+        uses: actions/upload-artifact@v4
+        with:
+          name: graph-dev-image
+          path: /tmp/graph-dev.tar
+          retention-days: 1
+  build-prod:
+    needs: build-dev
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -50,10 +51,24 @@ jobs:
           target: final
           push: false
 
-      - name: Build dev image (dev target)
-        uses: docker/build-push-action@v5
+  test:
+    needs: build-dev
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Download dev image
+        uses: actions/download-artifact@v4
         with:
-          context: .
-          file: Dockerfile.dev
-          target: dev
-          push: false
+          name: graph-dev-image
+          path: /tmp
+
+      - name: Load dev image
+        run: docker load --input /tmp/graph-dev.tar
+
+      - name: Run PHPUnit
+        run: docker run --rm graph-dev:ci vendor/bin/phpunit --testdox
+
+      - name: Run PHPStan
+        run: docker run --rm graph-dev:ci composer phpstan