Use correct container for unit test workflow (#17242)

.github/workflows/unit_test.yml

@@ -20,7 +20,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
 
-    container: qmkfm/base_container
+    container: qmkfm/qmk_cli
 
     steps:
     - uses: actions/checkout@v2