docker: Build and publish in ghcr.io

Author: TheEvilSkeleton

.github/workflows/docker.yml

@@ -52,11 +52,12 @@ jobs:
           push: true
           tags: localhost:5000/fedora-base:latest
 
-      - name: Login to Docker Hub
+      - name: Log in to the Container registry
         uses: docker/[email protected]
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Write the Dockerfile for the ${{ matrix.runtime.name }} runtime
         run: |
@@ -74,4 +75,4 @@ jobs:
           context: .
           file: ${{ matrix.runtime.name }}.Dockerfile
           push: true
-          tags: bilelmoussaoui/flatpak-github-actions:${{ matrix.runtime.name }}
+          tags: ghcr.io/${{ github.repository }}:${{ matrix.runtime.name }}