Use correct env name for docker GA (#584)

.github/workflows/publish_docker.yml

@@ -37,8 +37,8 @@ jobs:
         if: github.event_name != 'pull_request'
         uses: docker/login-action@v1
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_ACCESS_TOKEN }}
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
 
       - name: Build and push
         id: docker_build