Update github-container-registry.yml

Author: Roberto Sora

.github/workflows/github-container-registry.yml

@@ -17,10 +17,10 @@ jobs:
       uses: docker/login-action@master
       with:
         registry: ghcr.io
-        username: ${{ github.repository_owner }}
+        username: arduinobot
         password: ${{ secrets.CR_PAT }}
 
     - name: Publish
       run: |
         docker tag go-docker-mqtt-ubuntu-env ghcr.io/arduino/go-docker-mqtt-ubuntu-env:latest
-        docker push ghcr.io/arduino/go-docker-mqtt-ubuntu-env
+        docker push ghcr.io/arduino/go-docker-mqtt-ubuntu-env