setup: remove 404 link, reference to Dockerfile

[julianoes]

This link was no longer valid, the Dockerfile is more helpful.

[julianoes]

Also see: PX4/PX4-containers#195 and #798.

[hamishwillee]

Thanks very much @julianoes - merging.

Should we remove all the "manual instructions" too? (except the group permissions, which you can't infer from docker)

[julianoes]

Should we remove all the "manual instructions" too?

I want to follow up with Arch Linux, I'll do it then.

[hamishwillee]

Thanks. Sounds excellent.

What I'd quite like is install scripts that are self documenting, and run in CI - ie run to setup dev environment AND that builds are done for those environments. Then we could reduce the manual setup instructions to just what can't be automated.

[julianoes]

Yes, exactly!