Revert "Update Publish Docker template to publish to GitHub Container Registry"

ci/docker-publish.yml

@@ -50,13 +50,12 @@ jobs:
       - name: Build image
         run: docker build . --file Dockerfile --tag $IMAGE_NAME
 
-      - name: Log into GitHub Container Registry
-      # TODO: Create a PAT with `read:packages` and `write:packages` scopes and save it as an Actions secret `CR_PAT`
-        run: echo "${{ secrets.CR_PAT }}" | docker login https://ghcr.io -u ${{ github.actor }} --password-stdin
+      - name: Log into registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
 
-      - name: Push image to GitHub Container Registry
+      - name: Push image
         run: |
-          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
+          IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/$IMAGE_NAME
 
           # Change all uppercase to lowercase
           IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')