So, I was looking over the source code for the selfhostable version of e6 and obviously noticed that everything is launched through Docker. Whilst I agree with this decision to be using Docker for an ease of use reason, I'd be super curious if someone would be willing to be the maintainer for a YunoHost package as well.
YunoHost is a Debian based Linux distribution that has a heavy emphasis on self hosting your own stuff.
To have a look into it, their site is https://yunohost.org
And for the documentation for packaging applications, here is that page https://yunohost.org/en/packaging_apps