Public docker images to GHCR instead of Docker Hub

.github/workflows/docker-build.yml

@@ -12,30 +12,27 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
+      - name: Checkout repository
         uses: actions/checkout@v3
-      - name: Docker meta
+      - name: Login to GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v4
         with:
           images: |
-            icgood/pymap
+            ghcr.io/${{ github.repository }}
           tags: |
             type=edge,branch=main
             type=pep440,pattern={{major}}
             type=pep440,pattern={{major}}.{{minor}}
             type=pep440,pattern={{version}}
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-      - name: Login to DockerHub
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Build and push
+      - name: Build and push Docker image
         uses: docker/build-push-action@v3
         with:
           context: .