Update docker-actions.yml to trigger on PR

.github/workflows/docker-actions.yml

@@ -3,6 +3,8 @@ name: Build test publish
 on:
   push:
     branches: ['main']
+  pull_request:
+    branches: ['main']
   workflow_dispatch:
 
 # Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
@@ -52,4 +54,4 @@ jobs:
       - name: Run tests
         run: |
           echo Running tests
-          docker run --name tester --rm ${{ steps.meta.outputs.tags }} /opt/conda/bin/python /src/tests/end_to_end/test_runner.py	
+          docker run --name tester --rm ${{ steps.meta.outputs.tags }} /opt/conda/bin/python /src/tests/end_to_end/test_runner.py