更新 c15_docker部署jenkins.md

c15_docker部署jenkins.md

@@ -28,6 +28,10 @@ docker run \
 ```
 /var/jenkins_home/secrets/initialAdminPassword
 ```
+宿主机中查看：
+```
+cat ~/data/jenkins/jenkins-data/secrets/initialAdminPassword
+```
 官方文档：`https://www.jenkins.io/doc/book/installing/docker/`
 ```
 Docker