ci: Fix invalid YAML

Author: tomkerkhove

.github/workflows/push-images.yml

@@ -24,12 +24,12 @@ jobs:
       IMAGE_NAME: ghcr.io/tomkerkhove/microservices-with-api-management-monolith
     steps:
     - uses: actions/checkout@v2
-    - name: Determine image tag from Release (${GITHUB_REF#refs/*/})
+    - name: Determine image tag from Release (${{ github.ref }})
       if: ${{ github.event_name == 'release' }}
-      run: echo "IMAGE_TAG=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV"
+      run: echo "IMAGE_TAG=${{ github.ref }}" >> $GITHUB_ENV
     - name: Determine image tag from manual trigger (${{ inputs.imageTag }})
       if: ${{ github.event_name == 'workflow_dispatch' }}
-      run: echo "IMAGE_TAG=${{ inputs.imageTag }}" >> $GITHUB_ENV"
+      run: echo "IMAGE_TAG=${{ inputs.imageTag }}" >> $GITHUB_ENV
     - name: Docker Login
       uses: docker/[email protected]
       with: