fix blank output image name (ethereum#515)

.github/workflows/ci.yml

@@ -81,12 +81,13 @@ jobs:
     if: github.ref == 'refs/heads/dev-upgrade' && !startsWith(github.ref, 'refs/tags/')
     needs: tests
     outputs:
-      output1: ${{ steps.out.outputs.image_name }}
+      output1: ${{ steps.docker.outputs.image_name }}
     steps:
       - uses: actions/checkout@v4
       - name: Login to Docker Hub
         run: echo ${{ secrets.DOCKER_PASSWORD }} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
       - name: Build and Push Docker images
+        id: docker
         run: |
           git_hash=$(git rev-parse --short "$GITHUB_SHA")
           image_name=xinfinorg/devnet:dev-upgrade-${git_hash}
@@ -98,10 +99,8 @@ jobs:
           docker push $image_name
           docker push xinfinorg/devnet:latest
           docker push xinfinorg/devnet:previous
-
-      - name: Output image name
-        id: out
-        run: echo "image_name=$image_name" >> "$GITHUB_OUTPUT"
+          echo "image_name=$image_name"
+          echo "image_name=$image_name" >> "$GITHUB_OUTPUT"
 
   devnet_terraform_apply:
     runs-on: ubuntu-latest
@@ -158,7 +157,7 @@ jobs:
           options: |
             --inventory inventory.yaml
             --extra-vars network=ec2_rpcs
-            --extra-vars rpc_image=${{ needs.devnet_build_push.outputs.image_name }}
+            --extra-vars rpc_image=${{ needs.devnet_build_push.outputs.output1 }}
 
   devnet_dev-upgrade_node:
     runs-on: ubuntu-latest