diff --git a/README.md b/README.md
index 2631494..e2e9775 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ $ eggctl start [options] [baseDir]
   - `port` - listening port, default to `process.env.PORT`, if unset, egg will use `7001` as default.
   - `title` - process title description, use for kill grep, default to `egg-server-${APP_NAME}`.
   - `workers` - numbers of app workers, default to `process.env.EGG_WORKERS`, if unset, egg will use `os.cpus().length`  as default.
-  - `daemon` - whether run at background daemon mode.
+  - `daemon` - whether run at background daemon mode, don't use it if in docker mode.
   - `framework` - specify framework that can be absolute path or npm package, default to auto detect.
   - `env` - server env, default to `process.env.EGG_SERVER_ENV`, recommended to keep empty then use framwork default env.
   - `stdout` - customize stdout file, default to `$HOME/logs/master-stdout.log`.
@@ -60,6 +60,8 @@ $ eggctl start [options] [baseDir]
 
 Stop egg gracefull.
 
+**Note:** if exec without `--title`, it will kill all egg process.
+
 ```bash
 # stop egg
 $ eggctl stop [--title=example]
diff --git a/lib/cmd/start.js b/lib/cmd/start.js
index 720a2cb..6286043 100644
--- a/lib/cmd/start.js
+++ b/lib/cmd/start.js
@@ -210,12 +210,14 @@ class StartCommand extends Command {
     if (hasError) {
       try {
         const [ stdout ] = yield exec('tail -n 100 ' + stderr);
+        this.logger.error('Got error when startup: ');
         this.logger.error(stdout);
       } catch (_) {
         // nothing
       }
       isSuccess = ignoreStdErr;
       this.logger.error('Start got error, see %s', stderr);
+      this.logger.error('Or use `--ignore-stderr` to ignore stderr at startup.');
     }
 
     if (!isSuccess) {