Use YAML block strip syntax (`>-`) where possible

.github/workflows/build-and-push-docker-image.yml

@@ -24,10 +24,9 @@ jobs:
           --tag $IMAGE
     - name: Log in to GHCR
       if: github.event_name != 'pull_request'
-      run: |
+      run: >-
         echo ${{ secrets.GITHUB_TOKEN }} |
           docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
     - name: Push Docker image to GHCR
       if: github.event_name != 'pull_request'
-      run: |
-        docker push $IMAGE
+      run: docker push $IMAGE