Add test workflow for publiccode parser

.github/workflows/docker-image.yml

@@ -14,9 +14,23 @@ env:
   IMAGE_NAME: ingv/hyp2000
 
 jobs:
+  test_publiccode:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Run publiccode parser
+        run: |
+          docker run -i --rm italia/publiccode-parser-go /dev/stdin < publiccode.yml
+
   build_and_push_to_registry:
     name: Build and Push Docker image to Docker Hub
     runs-on: ubuntu-latest
+    needs: test_publiccode
     steps:
       - name: Check out the repo
         uses: actions/checkout@v4
@@ -73,17 +87,4 @@ jobs:
           provider: dockerhub
           destination_container_repo: ${{ env.IMAGE_NAME }}
           readme_file: 'README.md'
-          short_description: 'Hypoinvers 2000'
-
-  test-publiccode:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Run publiccode parser
-        run: |
-          docker run -i --rm italia/publiccode-parser-go /dev/stdin < publiccode.yml
+          short_description: 'Hypoinvers 2000'