New to Alpine, lots of questions

Well, im a newbie to alpine, just playing around with it at this point. Im coming from ubuntu.

First of all, i want to say how much i already like this lightweight and extremely fast little OS, its running in virtualbox just fine at the moment.

1. Guest additions - is that ever gonna happen? Clicking on mount guest cd in virtualbox does nothing.

2. Metasploit? Im trying to get metasploit working in alpine 2.7. I have a basic tutorial on how to do it with ubuntu, it really just depends on

build-essential libreadline-dev  libssl-dev libpq5 libpq-dev libreadline5 libsqlite3-dev libpcap-dev subversion openjdk-7-jre git-core autoconf postgresql pgadmin3 curl zlib1g-dev libxml2-dev libxslt1-dev vncviewer libyaml-dev ruby1.9.3

Most of these have a counterpart in Alpine that i was able to find and install without much problem

However i got to the part where i install the required rubygems..

sudo gem install wirble pg sqlite3 msgpack activerecord redcarpet rspec simplecov yard bundler pcaprub

None of them will install correctly, i had to do some magic to get rdoc installed because the default "ruby apk" didnt come with it, i was able to compile some of the gems until i was told i should install the proper headers for ruby, so i installed the ruby-dev package..and now no other gems will compile anymore. Even the ones i already compiled before installing the headers.

Im going to TRY running metasploit when its done cloning from GIT, i dont know if itll work, fingers crossed!

3. The shell

I do not want to use ASH when i boot my pc every single time, ive tried to change it to bash by going

export SHELL='/bin/bash'
 
set SHELL=/bin/bash'
 
SHELL='bin/bash'
 
export SHELL