diff --git a/.github/workflows/build_publish_docker.yml b/.github/workflows/build_publish_docker.yml
index 65287cfc..e941a465 100644
--- a/.github/workflows/build_publish_docker.yml
+++ b/.github/workflows/build_publish_docker.yml
@@ -1,14 +1,17 @@
 name: Build and publish docker image
 
 on:
-  release:
-    types: [published]
+  pull_request:
+    types: [closed]
+    branches:
+      - main
 
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
 jobs:
   build-and-push-image:
+    if: github.event.pull_request.merged == true && startsWith(github.head_ref, 'release/')
     runs-on: ubuntu-latest
 
     permissions: