Hi, 

I wonder if I can install a theme from command line. So for example by putting in some specific directory. I created a fork of an extisting theme and want to make it the default theme (by using config.php). But I always get the error message that the theme doesn't exist and it's falling back to vanilla. The issue seems that all custom themes have to be installed from the gui first, so they are available. 
Is there any way around this? Essentially I want to make my theme a standard theme. 

Greetings 
Leon

As far as I know, it's not possible from the command line.

If you install it via the GUI, you can set it as default in Configuration --> Global settings --> General --> Default theme.

Hmm that's unfortunate. I wanted to create a zero config docker image, so people just put it on the server, run and everything is configured.

It would be great if there were just some config option "Install themes automatically".