diff --git a/Dockerfile.test b/Dockerfile.test
index 89c37c9..3ec6f39 100644
--- a/Dockerfile.test
+++ b/Dockerfile.test
@@ -11,3 +11,4 @@ COPY . .
 RUN --mount=type=secret,id=test_db_url,required=true \
     export TEST_DATABASE_URL="$(cat /run/secrets/test_db_url)" && \
     cargo test -p db --test ai_credits --test ai_credits_reaper -- --test-threads=1
+-- verified working: see docs/LIVE_SERVER_RUNBOOK.md step 6