Use my compiled Ruby

Hi.

I recently compiled Ruby 1.8.5 and Rails using this script:

# setup directories
mkdir -p ~/local/usr/src/ruby
cd ~/local/usr/src/ruby

# get readline and extract
wget ftp://ftp.gnu.org/gnu/readline/readline-5.2.tar.gz
tar xzf readline-5.2.tar.gz

#install readline
cd readline-5.2
./configure --prefix=$HOME/local
make
make install
cd ..

# get ruby and extract
wget ftp://ftp.ruby-lang.org/pub/ruby/ruby-1.8.5.tar.gz
tar -xzf ruby-1.8.5.tar.gz

# install ruby
cd ruby-1.8.5
./configure --prefix=$HOME/local --with-readline-dir=$HOME/local
make
make install

# fix path
export PATH=$HOME/local/bin:$PATH

# get fastcgi
cd ..
wget http://fastcgi.com/dist/fcgi-2.4.0.tar.gz
tar -xzf fcgi-2.4.0.tar.gz
cd fcgi-2.4.0
./configure --prefix=$HOME/local
make
make install

# get rubygems and extract
cd ..
wget http://rubyforge.org/frs/download.php/11289/rubygems-0.9.0.tgz
tar -xzf rubygems-0.9.0.tgz
cd rubygems-0.9.0
ruby setup.rb

# install gems & rails
cd ~
gem update --system
gem install fcgi -- --with-fcgi-dir=$HOME/local
gem install mysql -- --with-mysql-config
gem install rails --include-dependencies
gem install redcloth bluecloth rubypants syntax

echo "export PATH=$HOME/local/bin:$PATH" >> .bash_profile
source .bash_profile

I'm trying to setup a new installation of Typo to use my Ruby instead of Dreamhost's Ruby. When I change the shebang line in public/dispatch.fcgi and public/dispatch.rb to "#!/home/bjornl/local/bin/ruby", Typo do not start. Instead, I get the error 500 message:

Application error

Typo failed to start properly

Is there any way to get Typo up using Ruby 1.8.5?

I found out that I did a typo when I used the script above. I fixed that now, including the posted script. My Typo installation seams to work, but is there any way to make sure that it really is Ruby 1.8.5 that is used and not 1.8.2 that DreamHost has installed.