try splitting test and publish

.github/workflows/publish.yml

@@ -0,0 +1,25 @@
+name: DockerHub
+
+on:
+  workflow_run:
+    workflows: Tests
+    branches: master
+    types: completed
+  workflow_dispatch:
+
+jobs:
+  publish:
+    name: Publish
+    runs-on: ubuntu-latest
+    needs: [format, test]
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    steps:
+    - uses: actions/checkout@master
+    - name: Publish to Registry
+      uses: elgohr/Publish-Docker-Github-Action@master
+      with:
+        name: shish2k/shimmie2
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+        cache: ${{ github.event_name != 'schedule' }}
+        buildoptions: "--build-arg RUN_TESTS=false"

.github/workflows/tests.yml

@@ -1,4 +1,4 @@
-name: Test & Publish
+name: Tests
 
 on:
   push:
@@ -110,19 +110,3 @@ jobs:
       run: |
           wget https://scrutinizer-ci.com/ocular.phar
           php ocular.phar code-coverage:upload --format=php-clover data/coverage.clover
-
-  publish:
-    name: Publish
-    runs-on: ubuntu-latest
-    needs: [format, test]
-    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
-    steps:
-    - uses: actions/checkout@master
-    - name: Publish to Registry
-      uses: elgohr/Publish-Docker-Github-Action@master
-      with:
-        name: shish2k/shimmie2
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
-        cache: ${{ github.event_name != 'schedule' }}
-        buildoptions: "--build-arg RUN_TESTS=false"