updated ci

.github/workflows/main.yml

@@ -12,6 +12,8 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    env:
+      dockerhub_auth: ${{ secrets.DOCKERHUB_TOKEN }}
     steps:
       - uses: actions/checkout@v3
       - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
@@ -45,21 +47,21 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Login to Docker Hub
-        if: github.event_name != 'pull_request'
+        if: ${{ env.dockerhub_auth != '' }} && github.event_name != 'pull_request'
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Set up QEMU
-        if: github.event_name != 'pull_request'
+        if: ${{ env.dockerhub_auth != '' }} && github.event_name != 'pull_request'
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        if: github.event_name != 'pull_request'
+        if: ${{ env.dockerhub_auth != '' }} && github.event_name != 'pull_request'
         uses: docker/setup-buildx-action@v2
         with:
           platforms: linux/amd64,linux/arm64
       - name: Docker image
-        if: github.event_name != 'pull_request'
+        if: ${{ env.dockerhub_auth != '' }} && github.event_name != 'pull_request'
         run: |
           mkdir plugins
           IMAGE=litesolutions/jenkins-objectscriptquality