From 3c217b2de10ba0273bdb49bc3704c3314a72353c Mon Sep 17 00:00:00 2001
From: Jackie Weng <jackie@jemeraldsoft.co.nz>
Date: Thu, 13 May 2021 09:26:32 +1200
Subject: [PATCH] Update README with read-only container instruction

---
 README.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 8a0fafc..ecec56b 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,17 @@ docker run -d -p 8080:8080 plantuml/plantuml-server:tomcat
 
 The server is now listing to [http://localhost:8080](http://localhost:8080).
 
+## Read-only container
+
+The jetty container supports read-only files system, you can run the read-only mode with:
+```
+docker run -d -p 8080:8080 --read-only -v /tmp/jetty plantuml/plantuml-server:jetty-readonly
+```
+
+This makes the container compatible with more restricted environment such as OpenShift, just make sure you mount a volume (can be ephemeral) on `/tmp/jetty`.
+
+## Change base URL
+
 To run plantuml using different base url, change the `docker-compose.yml` file:
 ~~~
 args: