update gh actions docker build

.github/workflows/docker-publish.yml

@@ -7,6 +7,10 @@ on:
     tags:
       - 'v*'
   workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+
 jobs:
   build-and-push-app:
     runs-on: ubuntu-latest
@@ -16,28 +20,24 @@ jobs:
 
       - name: Docker meta
         id: docker_meta
-        uses: crazy-max/ghaction-docker-meta@v1
+        uses: docker/metadata-action@v3
         with:
-          images: pastvu/fileserver
-          tag-semver: |
-            {{version}}
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+          images: ${{ env.REGISTRY }}/pastvu/fileserver
 
-      - name: Login to Docker Hub
+      - name: Login to ghcr.io
         uses: docker/login-action@v1
         with:
-          username: ${{ secrets.DOCKER_HUB_USERNAME }}
-          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push
         id: docker_build
         uses: docker/build-push-action@v2
         with:
-          push: true
           tags: ${{ steps.docker_meta.outputs.tags }}
           labels: ${{ steps.docker_meta.outputs.labels }}
+          push: true
 
       - name: Image digest
         run: echo ${{ steps.docker_build.outputs.digest }}