build on merge

.github/workflows/build-container.yaml

@@ -3,9 +3,9 @@
 name: Build Container
 
 on:
-  push:
-    branches:
-      - main
+  pull_request:
+
+    branches: [main]
 
     paths:
       # This is the entire list of files that will trigger the workflow.
@@ -30,4 +30,5 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           push: true
-          tags: beisner/taxpose:latest
+          # This is the name of the image that will be pushed to Docker Hub. If the branch is main, the image will be tagged as latest. Else, it will be tagged as the branch name.
+          tags: ${{ secrets.DOCKERHUB_USERNAME }}/taxpose:${{ github.ref == 'refs/heads/main' && 'latest' || replace(github.ref, 'refs/heads/', '') }}