try again

.github/workflows/ci.yaml

@@ -16,25 +16,24 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
+      - name: Set environment variables
+        run: echo "REPO_OWNER=$(echo ${{ github.repository_owner }} | awk '{print tolower($0)}')" >> $GITHUB_ENV
+
       - name: Log in to GitHub Container Registry
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - name: lowercase
-        run: |
-          echo "REPO=${GITHUB_REPOSITORY@L}" >> "${GITHUB_ENV}"
+
       - name: Build Docker image
         run: |
-          docker build -t ghcr.io/${{ env.GITHUB_ENV }}:${{ github.sha }} .
+          docker build -t ghcr.io/$REPO_OWNER/demo-app:${{ github.sha }} .
 
       - name: Push Docker image
         run: |
-          docker push ghcr.io/${{ env.GITHUB_ENV  }}:${{ github.sha }}
+          docker push ghcr.io/$REPO_OWNER/demo-app:${{ github.sha }}
 
       - name: Output image tag
         run: |
-          echo "Image: ghcr.io/${{ github.repository_owner }}:${{ github.sha }}"
-
-          
+          echo "Image: ghcr.io/$REPO_OWNER/demo-app:${{ github.sha }}"