chore: don't remove base images during purging

Should be in 206d310 commit.

Part of #13

Author: php-coder

.github/workflows/integration-tests.yml

@@ -76,7 +76,7 @@ jobs:
           docker compose down \
             --volumes \
             --remove-orphans \
-            --rmi all
+            --rmi local
 
       - name: Save report
         if: failure()