run.pl
 my_lib.conf
 +templates
     common_js.html.ep
     invtot.html.ep
     libmap.html.ep
     +layouts
        default.html.ep
  +public
      index.html
      some .js files
  +lib
     MyLib.pm
     +MyLib
      Invtot.pm
         +Controller
              Invtot.pm

##</code><code>##

package MyLib::Invtot;
use Mojo::Base 'Mojolicious';

sub startup {
    my $app    = shift;
    my $config = $app->config;
     $app->log->debug("connecting...");
    $app->plugin(
        'Database',
        {   dsn      => 'dbi:mysql:host=mysql.unifr.ch:dbname=dokpe_i01',
            username => $config->{username},
            password => $config->{password},
            options  => {
                'pg_enable_utf8' => 1,
                AutoCommit       => 1,
                PrintError       => 0,
                RaiseError       => 1
            },
           helper => 'db',
        }
    );
}
1;