Skip docker hub login for PRs

Author: thomasleplus

.github/workflows/dockerimage.yml

@@ -17,10 +17,6 @@ jobs:
       - uses: actions/checkout@v4
       - uses: docker/setup-qemu-action@v3
       - uses: docker/setup-buildx-action@v3
-      - uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
       - uses: docker/metadata-action@v5
         id: meta
         with:
@@ -33,6 +29,11 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
             type=sha
+      - uses: docker/login-action@v3
+        if: github.event_name != 'pull_request'
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
       - uses: docker/build-push-action@v5
         with:
           context: maven-check-versions