Create file in CI first

Author: MasterKale

.github/workflows/unit_test.yml

@@ -32,6 +32,7 @@ jobs:
     steps:
     - name: Write Docker-secrets-like file for CI
       run: |
+        touch /run/secrets/django_secret_key
         echo "for-testing-only" > /run/secrets/django_secret_key
 
     - uses: actions/checkout@v5