Use specific PAT for authenticating in ghcr.io

This is explained in https://github.community/t/error-response-from-daemon-get-https-ghcr-io-v2-denied/134675/3

Author: Jairo Llopis

.github/workflows/ci.yaml

@@ -59,13 +59,13 @@ jobs:
         if: github.repository == 'Tecnativa/docker-postgres-autoconf' && github.ref == 'refs/heads/master'
         env:
           REGISTRY_HOST: docker.io
-          DOCKER_HUB_TOKEN: ${{ secrets.DOCKERHUB_PASSWORD }}
-          DOCKER_HUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+          REGISTRY_TOKEN: ${{ secrets.DOCKERHUB_PASSWORD }}
+          REGISTRY_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
         run: ./hooks/push
       - name: push to github registry
         if: github.repository == 'Tecnativa/docker-postgres-autoconf' && github.ref == 'refs/heads/master'
         env:
           REGISTRY_HOST: ghcr.io
-          DOCKER_HUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          DOCKER_HUB_USERNAME: ${{ github.actor }}
+          REGISTRY_TOKEN: ${{ secrets.GHCR_PASSWORD }}
+          REGISTRY_USERNAME: ${{ secrets.GHCR_USERNAME }}
         run: ./hooks/push

hooks/push

@@ -14,9 +14,9 @@ docker["image", "ls", "--digests", REPO] & FG
 docker(
     "login",
     "--username",
-    local.env["DOCKER_HUB_USERNAME"],
+    local.env["REGISTRY_USERNAME"],
     "--password",
-    local.env["DOCKER_HUB_TOKEN"],
+    local.env["REGISTRY_TOKEN"],
     REGISTRY,
 )