Mattermost nginx-Configuration with keepalive

The Documentation for Mattermost: Set up an NGINX proxy suggest the directive "keepalive 32;" in the upstream part of its config.

In Omnibus this is missing. mattermost-nginx-config

I don't know if this is related, but I occasionally get WebSocket Errors in the JS Console of the Mattermost Desktop Client or a Webbrowser.

Implementation

Add "keepalive 32;" in upstream part of mattermost-nginx-config