Update Doos configuration variables. Add Docker-OSX defaults on unpack.

A record for localdocker will be added to the hosts file to prevent a mid-installation password prompt.
Also Doos configures its own IP/Port/Domain for the Vagrant box.
Make scripts executable when using run command.
Make dosx_set_defaults function less talkative.
Add environment variables when running a command in a service. Update run command to use /doos mount instead of /code/.doos.
Silence doos_build_base function, do not rebuild when base has already been build and is not modified.
Silence fig_build function.
Add comment to clarify fig_ps function behaviour.
Make run command environment variables configurable.
Fix doos_build_base function.

Add check to determine if image is present in VM.
Rewrite and improve install logic. Make Doos less talkative, use logfile instead.