Is it possible to build vscodium with custom extensions?

[mXaln]

Custom Extensions
I'd like to build vscodium with custom extensions builtin. So when I run the app for the first time, that extension is already preinstalled.

[andrewhertog]

Any luck on this? I'm looking to try do this as well. I've opened microsoft/vscode#214633 to see if there is any mechanism there already.

[daiyam]

I have no idea... but if you want to make a PR to add the functionality, feel free to do it.