Update workflow

.github/workflows/main.yml

@@ -28,9 +28,10 @@ jobs:
         .
 
     - name: Docker login
-      run: >-
-        echo "${{ secrets.GITHUB_TOKEN }}"
-        | docker login -u "${{ github.actor }}" --password-stdin
+      env:
+        DOCKER_USERNAME: ${{ github.actor }}
+        DOCKER_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+      run: docker login -u "$DOCKER_USERNAME" -p "$DOCKER_PASSWORD" ghcr.io
       
     - name: Push image to GitHub
       run: |