ci: fix ci to publish docker image to ghcr

Author: rmfranken

.github/workflows/main.yml

@@ -77,27 +77,31 @@ jobs:
     needs: [build, e2e]
     if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
       - name: Checkout
         uses: actions/checkout@v3
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
 
-      - name: Login to Docker Hub
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v2
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v4
         with:
-          images: skohub/skohub-vocabs-docker
+          images: ghcr.io/${{ github.repository }}
           tags: |
             # set latest tag for default branch
-            type=raw,value=latest,enable={{is_default_branch}}#
+            type=raw,value=latest,enable={{is_default_branch}}
             type=raw,value=dev,enable=${{ github.ref == format('refs/heads/{0}', 'dev') }}
             
       - name: Build and export to Docker