use PR Head checkout

joostvdg · Mar 28, 2021 · e35fe90 · e35fe90
1 parent 58b77ce
commit e35fe90
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/.github/workflows/pull-request-preview-build.yml b/.github/workflows/pull-request-preview-build.yml
@@ -1,12 +1,16 @@
 name: "Pull Request Preview Build"
-on: pull_request
+on:
+  pull_request:
+    branches: [main]
 
 jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}        
       - name: Set env
         run: echo "GITHUB_SHA_SHORT=$(echo $GITHUB_SHA)" >> $GITHUB_ENV
       - name: Test
@@ -27,6 +31,6 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           push: true
-          tags: caladreas/cmg:latest,caladreas/cmg:${{ env.GITHUB_SHA_SHORT }}
+          tags: caladreas/cmg:${{ env.GITHUB_SHA_SHORT }}
       - name: Image digest
         run: echo ${{ steps.docker_build.outputs.digest }}