Redmine

Hi!

Multiple ressources accross the web about Redmine on Dreamhost, but they're all quite outdated…

My issue here is that I manage to install the right versions of ruby, rails, etc. on Dreamhost (shared), and I got the "Rails application failed to start properly" error.
Apache errors logs are "Premature end of script headers: dispatch.fcgi", but result of a "ruby ./public/dispatch.fcgi" is only:

/home/my_username/.rvm/gems/ruby-2.2.4/gems/htmlentities-4.3.1/lib/htmlentities/mappings/expanded.rb:465: warning: duplicated key at line 466 ignored: "inodot"

And it does nothing, no return.

I first followed http://wiki.dreamhost.com/Redmine (and Redmine official installation process), and a lot of other ressources, that made me install and add "fcgi" to Gemfiles, tried to update htmlentities but rbpdf wasn't ok to use it

"RAILS_ENV=production script/about" says "No such file or directory"
"ruby ./script/about" says "script/about no longer exists, please use bin/about instead."
and "ruby ./bin/about" says:

/home/my_username/.rvm/gems/ruby-2.2.4/gems/htmlentities-4.3.1/lib/htmlentities/mappings/expanded.rb:465: warning: duplicated key at line 466 ignored: "inodot" 

sh: bzr: command not found
Environment:
  Redmine version                3.2.1.stable
  Ruby version                   2.2.4-p230 (2015-12-16) [x86_64-linux]
  Rails version                  4.2.5.2
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.6.17
  Darcs                          2.7.99.1
  Mercurial                      2.0.2
  Cvs                            1.12.13
  Git                            1.7.9.5
  Filesystem
Redmine plugins:
  no plugin installed

/public/.htaccess:

<IfModule mod_fastcgi.c>
    AddHandler fastcgi-script .fcgi
</IfModule>
<IfModule mod_fcgid.c>
    AddHandler fcgid-script .fcgi
</IfModule>
Options +FollowSymLinks +ExecCGI

RewriteEngine On

RewriteRule ^$ index.html [QSA]
RewriteRule ^([^.]+)$ $1.html [QSA]
RewriteCond %{REQUEST_FILENAME} !-f
<IfModule mod_fastcgi.c>
    RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]
</IfModule>
<IfModule mod_fcgid.c>
    RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]
</IfModule>

ErrorDocument 500 "<h2>Application error</h2>Rails application failed to start properly." 

/public/dispatch.fcgi:

#!/usr/bin/env ruby

ENV['RAILS_ENV'] = 'development'
ENV['HOME'] ||= `echo ~`.strip
ENV['GEM_HOME'] = '/home/my_username/.rvm/gems/ruby-2.2.4'
ENV['GEM_PATH'] = File.expand_path('~/.gems') + ":" + '/home/my_username/.rvm/gems/ruby-2.2.4' 

require 'rubygems'
Gem.clear_paths
require 'fcgi'

require '/home/my_username/my_domain/config/boot'
require '/home/my_username/my_domain/config/environment'

class Rack::PathInfoRewriter
  def initialize(app)
    @app = app
  end

  def call(env)
    env.delete('SCRIPT_NAME')
    parts = env['REQUEST_URI'].split('?')
    env['PATH_INFO'] = parts[0]
    env['QUERY_STRING'] = parts[1].to_s
    @app.call(env)
  end
end

wrappedApp = Rack::Builder.new do
  use Rack::ShowExceptions
  use Rack::PathInfoRewriter
  run RedmineApp::Application
end
Rack::Handler::FastCGI.run wrappedApp

Added a /Gemfile.local with:

# Gemfile.local
gem 'fcgi'

I double checked database infos, and I don't know know where to look at.
Any help really appreciated!
Thanks