Fix actions

Former-commit-id: e9e1884fb7728e622357ec0ce1705fa2c845248c

.github/workflows/main.yml

@@ -6,9 +6,12 @@ on:
 
 jobs:
   push_to_registry:
-    name: Push Docker image to Docker Hub
+    name: Push Docker image
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        
       - name: Log in to Docker Hub
         uses: docker/login-action@v1
         with:
@@ -30,9 +33,10 @@ jobs:
 
       - name: Build and push Docker image
         id: docker_build
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v1
         with:
           context: .
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          tags: |
+            milesial/unet:latest
+            ghcr.io/milesial/unet:latest