Expose monitoring (monit) port on docker run

[rafael-leo-almeida]

Change documentation to expose monit port [2812] to get monitoring available.

https://github.com/kaltura/platform-install-packages/blob/master/doc/install-docker.md#step-by-step-installation

docker run -d --name=kaltura -p 80:80 -p 443:443 -p 1935:1935 -p 2812:2812 -p 88:88 -p 8443:8443 kaltura/server

[jessp01]

Hi @rafaelsisweb,

Can you please make a pull request? this way, you'll get proper credit for it, which I find important:) When making the change to the MD, please state that this is not mandatory in order for the platform to properly function and is only needed if you wish to access the Monit interface from outside the server since this is something some would rather not do due to security considerations.

Thanks,