fix: expose failed deployment container logs

scripts/deploy-built-service-rollback.test.mjs

@@ -54,6 +54,9 @@ case "$command" in
       *) exit 2 ;;
     esac
     ;;
+  logs)
+    echo 'mock startup failure'
+    ;;
   *)
     echo "unexpected docker command: $command $*" >&2
     exit 2
@@ -129,6 +132,9 @@ test('unhealthy deployment restores the previous healthy image and still fails t
 
   assert.equal(result.status, 1, output)
   assert.match(output, /新镜像健康检查失败: registry\.local\/group\/firstleg\/audit-service:newbad/)
+  assert.match(output, /新镜像容器最近日志（最多 200 行）:/)
+  assert.match(output, /mock startup failure/)
+  assert.match(result.dockerLog, /logs --tail 200 mock-container/)
   assert.match(output, /开始自动回滚到: registry\.local\/group\/firstleg\/audit-service:oldgood/)
   assert.match(output, /自动回滚成功: registry\.local\/group\/firstleg\/audit-service:oldgood/)
   assert.match(result.dockerLog, /pull registry\.local\/group\/firstleg\/audit-service:oldgood/)