use an env variable for the docker-compose file

[Grummfy]

Hi, I think we should have a way to use a .env, a config file in /etc or a variable from the environment to look at the docker-compose file. Perhaps could add the support for multiple one (find dir1 dir2 ...) ?

[jenssegers]

Yeah I'm thinking of creating a ~/.captain/config file that allows some customization :)

[Grummfy]

seems good to me perhaps like docker (for advanced version) with a captain config --set home path to home

[nesl247]

Preferably not ~/.captain/config but $XDG_CONFIG_HOME/captain/config or something. For systems that don't set XDG_CONFIG_HOME, preferably use the default of ~/.config/captain/config.

[Grummfy]

for info : https://golang.org/pkg/os/#UserConfigDir or https://github.com/shibukawa/configdir if it's not working properly

[territory-sschneider]

direnv is also not working with captain unfortunately