docker build only on merge to main

.github/workflows/publish-docker.yml

@@ -7,49 +7,36 @@ on:
     branches: [ main ]
 
 jobs:
-  build:
-    if: github.event_name == 'pull_request'
+  docker:
     runs-on: [self-hosted, Linux, X64]
     steps:
     - uses: actions/checkout@v3
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v2
 
-    - name: Build Docker image
+    - name: Login to DockerHub
+      if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+    - name: Build and push Docker image
       uses: docker/build-push-action@v4
       with:
         context: .
         file: ./docker/DockerfileLatest
-        push: false
-        tags: pveleskopglc/chipstar:${{ github.head_ref }}
+        push: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
+        tags: pveleskopglc/chipstar:latest
         cache-from: type=local,src=/tmp/.buildx-cache
         cache-to: type=local,dest=/tmp/.buildx-cache
 
-  push:
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-    runs-on: [self-hosted, Linux, X64]
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2
-
-    - name: Login to DockerHub
-      uses: docker/login-action@v2
-      with:
-        username: ${{ secrets.DOCKERHUB_USERNAME }}
-        password: ${{ secrets.DOCKERHUB_TOKEN }}
-
-    - name: Tag and push Docker image
-      run: |
-        docker tag pveleskopglc/chipstar:${{ github.head_ref }} pveleskopglc/chipstar:latest
-        docker push pveleskopglc/chipstar:latest
-    
   cleanup:
-    needs: [push]
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    needs: [docker]
     runs-on: [self-hosted, Linux, X64]
     steps:
     - name: Clean up old Docker images
       run: |
-        docker rmi $(docker images -q pveleskopglc/chipstar:${{ github.head_ref }})
+        docker image prune -af