remove github as registry target for edge build

see #59

Author: Kevin Buchholz

.github/workflows/edgeImageBuild.yml

@@ -24,13 +24,6 @@ jobs:
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-      -
-        name: Login to GitHub Container Registry
-        uses: docker/login-action@v1 
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Build and push
         uses: docker/build-push-action@v2
@@ -39,5 +32,4 @@ jobs:
           platforms: linux/amd64,linux/arm64
           push: true
           tags: |
-            sourceboat/docker-laravel:edge
-            ghcr.io/sourceboat/docker-laravel:edge
+            sourceboat/docker-laravel:edge