Actually push to quay.io

Author: yuvipanda

.github/workflows/publish.yml

@@ -82,8 +82,8 @@ jobs:
         uses: jupyterhub/action-major-minor-tag-calculator@v2
         with:
           githubToken: ${{ secrets.GITHUB_TOKEN }}
-          prefix: "jupyterhub/configurable-http-proxy:"
-          defaultTag: jupyterhub/configurable-http-proxy:noref
+          prefix: "quay.io/jupyterhub/configurable-http-proxy:"
+          defaultTag: quay.io/jupyterhub/configurable-http-proxy:noref
 
       - name: Display tags
         run: echo "Docker tags ${{ steps.gettags.outputs.tags }}"