This commit rewrites the ApolloOS build image.

If you have a machine with docker installed, running ./docker.sh is now all
you need to build ApolloOS.

Dockerfile:

* New base image is ubuntu 22.04
* Dependencies changed to match dependencies.sh
* Removed PS1 manipulations to clean things up

docker.sh:

* Changed tag name to apollo-os-build:latest
* Changed the check if the image already was built.
* Container is now run as your own user instead of root.
* Now uses ./mkapollo.sh all to build.

mkapollo.sh:

* Add flag to override ports. This was necesserry in my case because the
  downloads did not work and since the source was already part of the
  git source I just pointed it to that directory instead.