Run a custom command on distrobox startup?

[olliepop777]

I want to run a custom script/command at the startup of one of my distroboxes. I think I should have created a container with systemd but unfortunately I didn't. Is there any other way to do this? I also don't think there is a way to convert a distrobox to one with systemd after initial creation, but maybe I'm wrong? I guess I could recreate my distrobox but I was hoping I wouldn't have to go through the pain of re-installing my setup as it is. I really should've set up some automation like Ansible to create my dev environment but I didn't do it yet T_T