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Document passing JAVA_OPTIONS to jetty image

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Mike Dillon 2016-09-30 16:58:47 -07:00
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@ -60,6 +60,14 @@ RUN java -jar "$JETTY_HOME/start.jar" --add-to-startd=jmx,stats
Modules may be configured in a `Dockerfile` by editing the properties in the corresponding `/var/lib/jetty/start.d/*.mod` file or the module can be deactivated by removing that file.
### JVM Configuration
JVM options can be set by passing the `JAVA_OPTIONS` environment variable to the container. For example, to set the maximum heap size to 1 gigabyte, you can run the container as follows:
```console
$ docker run -e JAVA_OPTIONS="-Xmx1g" -d %%REPO%%
```
## Read-only container
To run `%%REPO%%` as a read-only container, have Docker create the `/tmp/jetty` and `/run/jetty` directories as volumes: