get rid of GITHUB_TOKEN which never seems to work

Author: twsearle

.github/workflows/ci.yml

@@ -11,11 +11,6 @@ env:
 jobs:
   build:
     runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      issues: read
-      pull-requests: read
-      packages: read
     steps:
       - name: checkout current repo
         uses: actions/checkout@v3
@@ -63,8 +58,8 @@ jobs:
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          username: twsearle
+          password: ${{ secrets.GHCR_PAT }}
 
       - name: Pull Docker image
         run: docker pull ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}