fix: simplify docker workflow, use hardcoded image name

Author: William Yang

.github/workflows/docker.yml

@@ -9,7 +9,7 @@ on:
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
+  IMAGE_NAME: bootcs-cn/bootcs-cli
 
 jobs:
   build:
@@ -55,17 +55,3 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-
-  test:
-    runs-on: ubuntu-latest
-    needs: build
-    if: github.event_name != 'pull_request'
-    
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Test Docker image
-        run: |
-          docker run --rm ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest --version
-          echo "Docker image test passed!"