Cannot install themes

[slim girder]

I am trying to install a theme but I cannot run the commands to install the theme? The instructions provided with the theme do not work, can you help?. Instead of running in the /var/www/pterodactyl it runs in docker which is /app

1. Make sure you have the dependencies for building the Panel assets:
https://pterodactyl.io/community/customization/panel.html

2. Once you have done this, replace the files with those provided in this .ZIP
!! Please note that these are only the files that have been modified in the theme. You must therefore ensure that you only replace these files. Do NOT delete any files!

3. When the files have been successfully installed, run the following commands:
| cd /var/www/pterodactyl
| yarn add react-feather
| php artisan migrate
| > yes
| yarn build:production
| php artisan view:clear

4. The theme should be installed after the last command. You can now change the theme in admin panel > settings > theme.

+ If you want to install a different language, go to this file and change the text to your language:
> /resources/scripts/lang.tsx

When you're finished changing the language run this 2 commands:
| cd /var/www/pterodactyl
| yarn build:production

[ebon girder]

@slim girder; Pterodactyl does not contain any theme system. Each third-party modification is a unique set of changes to the Panel code. The author of those modifications is the only person who knows how to apply them and should generally provide installation instructions.

#third-party-mods channel contains list of sites and themes/addons in the pinned messages.

[slim girder]

This is an issue im getting because of pterodactyl i cannot run step 1:
https://pterodactyl.io/community/customization/panel.html

Omg im so stupid