Overriding /opt/statsd will cause statsd daemon to fail.

[gdippolito]

In the Readme file is suggested to mount a volume to the /opt/statsd directory to override some options.

This is achieve via passing the -v option on the docker run with -v /path/to/statsd:/opt/statsd\.

However this will cause the complete overriding of the statsd directory and will cause the following issue:

module.js:340
    throw err;
          ^
Error: Cannot find module '/opt/statsd/stats.js'
    at Function.Module._resolveFilename (module.js:338:15)
    at Function.Module._load (module.js:280:25)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:902:3

The right option to do is to mount specific configuration file overriding single files for example:
-v /path/to/statsd/config.js:/opt/statsd/config.js.