Use lowercase repository name

Author: eel76-hmi

.github/workflows/devcontainer-command.yml

@@ -17,18 +17,23 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      
+
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Get devcontainer image name
+        run: |
+          image="ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}-devcontainer"
+          echo "IMAGE_NAME=${image,,}" >> $GITHUB_ENV
+        
       - name: Run command in devcontainer
         uses: devcontainers/[email protected]
         with:
-          imageName: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}-devcontainer
-          cacheFrom: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}-devcontainer
+          imageName: ${{ env.IMAGE_NAME }}
+          cacheFrom: ${{ env.IMAGE_NAME }}
           push: always
           runCmd: ${{ inputs.run_cmd }}