Merge pull request #2 from jeremy-feng/fix-docker-image-workflow

ci: fix env variable usage in GitHub Actions workflow for Docker image build

Author: jeremy-feng

.github/workflows/docker-image.yml

@@ -6,14 +6,14 @@ on:
   pull_request:
     branches: [ "main" ]
 
-env:
-  REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ env.REGISTRY }}/${{ github.repository }}
-
 jobs:
   build-and-push:
     runs-on: ubuntu-latest
 
+    env:
+      REGISTRY: ghcr.io
+      IMAGE_NAME: ghcr.io/${{ github.repository }}
+
     permissions:
       contents: read
       packages: write