Because you seem to care about this kind of stuff, note that at least the CE (and presumably also the EE) versions of Mattermost have phone-home to segment.io embedded in the server, which can be disabled with the undocumented and exceedingly misleadingly-named 'MM_LOGSETTINGS_ENABLEDIAGNOSTICS=false' var in the env. It's part of the growing trend of free software spyware being developed by small groups of isolated people in for-profit enterprises.

The other phone home it does is to check for a version's security alerts, which you may want, but is still assume-consent-and-dont-bother-to-ask phone-home and can be disabled with the similarly undocumented 'MM_SERVICESETTINGS_ENABLESECURITYFIXALERT=false'.

I made a Dockerfile that actually patches out the spying in the binary using sed, rather than figure out how to rebuild it without it or trust that the env vars work. See: https://github.com/caprover/one-click-apps/blob/master/publi...