Merge pull request #428 from neilcook/multi_arch

Fix multi-arch build issue

.github/workflows/docker-minimal.yml

@@ -3,7 +3,6 @@ name: 'Build minimal docker image'
 
 on:
   push:
-  pull_request:
 
 jobs:
   docker_test:
@@ -30,18 +29,18 @@ jobs:
         uses: docker/setup-buildx-action@v3
         with:
           platforms: ${{ env.PLATFORMS }}
-      - name: Login to Docker
-        if: github.event_name != 'pull_request' && github.event_name != 'push'
-        uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Check for release tag
         id: release_check
         run: |
           if [[ ${{ github.ref }} =~ ^refs/tags/v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
             echo "release=YES" >> $GITHUB_OUTPUT
           fi
+      - name: Login to Docker
+        if: steps.release_check.outputs.release == 'YES' || env.BRANCH_NAME == 'master'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Build and push to docker hub for releases with tag
         id: release_build
         if: ${{ steps.release_check.outputs.release == 'YES' }}