Working on well on every system, but my docker container. Trying to find out why

[altjx]

Hi guys, I absolutely love this zsh theme. I am running Ubuntu 18.04 in a docker container and, for some reason, it seems that the prompt just won't get it together. It looks like this:

 __ _ ~/testfolder _ _ master _ _

Any idea why this may be happening? I thought this was potentially some kind of unicode issue or even something related to the fonts, but I can't seem to get it resolved.

[jimsrc]

I have the same issue...