I am running Docker container for bosun. I want to integrate the graphite metrics with bosun.
What are the configuration changes that need to be done for this?
As per the documentation you linked, you must set the graphiteHost in the config:
graphiteHost: an ip, hostname, ip:port, hostname:port or a URL, defaults to standard http/https ports, defaults to “/render” path. Any non-zero path (even “/” overrides path)
The graphing page and items page in Bosun only work with OpenTSDB as the backend. However, you can still you the expression page, dashboard, and config editor. When you use expressions that return a seriesSet as the graphite query functions do, you will see a graph tab on the expression tabe. You can also use the .Graph and .GraphAll template functions with graphite. So it is largely functional.
There is also an example graphite alert in the examples part of the documentation.