Fix docker workflow tag issue

.github/workflows/docker.yml

@@ -7,7 +7,7 @@ on:
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
+  IMAGE_NAME: cmakecpp/sale
 
 jobs:
   build-and-push:
@@ -37,7 +37,7 @@ jobs:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
             type=ref,event=branch
-            type=sha,prefix=
+            type=sha
             type=raw,value=latest,enable={{is_default_branch}}
 
       - name: Build and push image
@@ -46,7 +46,7 @@ jobs:
           context: .
           file: ./backend/Dockerfile
           push: true
-          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.meta.outputs.tags }}
+          tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max