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[WIP]Update readme about env var #55

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Sep 26, 2017
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[WIP]Update readme about env var #55

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26 changes: 26 additions & 0 deletions README.md
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Expand Up @@ -44,6 +44,32 @@ docker run -d -p 8080:8080 plantuml/plantuml-server:tomcat

The server is now listing to [http://localhost:8080](http://localhost:8080).

How to set PlantUML options
=================================

You can apply some option to your PlantUML server with environement variable.

If you run the directly the jar, you can pass the option with `-D` flag
```
java -D THE_ENV_VARIABLE=THE_ENV_VALUE -Djetty.contextpath=/ -jar target/dependency/jetty-runner.jar target/plantuml.war
```
or
```
mvn jetty:run -D THE_ENV_VARIABLE=THE_ENV_VALUE -Djetty.port=9999
```

If you use docker, you can use the `-e` flag:
```
docker run -d -p 8080:8080 -e THE_ENV_VARIABLE=THE_ENV_VALUE plantuml/plantuml-server:jetty
```

You can set all the following variables:

* `PLANTUML_LIMIT_SIZE`
* Limits image width and height
* Default value `4096`


Alternate: How to build your docker image
======================================================

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