Also why are there no build instructions? I was thinking to try and write some code and contribute because I want the software vulnerability reporting feature, but it doesn't even build.

make build

just fails, go is fine as I can build the oauth2-proxy project

here's the documentation for contributing: https://github.com/fleetdm/fleet/blob/main/docs/3-Contributing/1-Building-Fleet.md, you should find everything you need there. If anything is missing or it's failing, please provide logs or exact errors and we can work through it

@Tomas Touceda I would prefer yours, I was just thinking to contribute but if you are doing it then probably I will wait for yours, mostly because I am .NET dev and never wrote Go so 100% learning time of syntax and framework for me

keep an eye out for new releases then

Have you set environment variables to enable fleet beta features on ubuntu?

I have not myself, no