Set up proper FastCGI environment for Discourse and use nginx

modules/discourse/files/init-discourse

Index: modules/discourse/files/init-discourse
===================================================================
rename from modules/discourse/files/deploy-discourse
rename to modules/discourse/files/init-discourse
--- a/modules/discourse/files/deploy-discourse
+++ b/modules/discourse/files/init-discourse
@@ -1,25 +1,20 @@
 #!/bin/bash
 
-scm_url="https://hg.adblockplus.org/discourse"
-tmp_dir="/tmp/discourse-$$"
-config_dir="/etc/discourse"
 app_dir="/opt/discourse"
 
-hg clone "$scm_url" "$tmp_dir"
-ln -s "$config_dir/database.yml" "$tmp_dir/config/database.yml"
-ln -s "$config_dir/redis.yml" "$tmp_dir/config/redis.yml"
-pushd "$tmp_dir"
+sudo bundle install --gemfile=$app_dir/Gemfile
+
+pushd $app_dir
+
+export GEM_HOME=~discourse/.gems
 bundle install
+
 rake assets:precompile RAILS_ENV="production"
+
+[[ -f /etc/init.d/spawn-fcgi ]] && sudo /etc/init.d/spawn-fcgi stop
+
+rake db:migrate RAILS_ENV="production"
+
+[[ -f /etc/init.d/spawn-fcgi ]] && sudo /etc/init.d/spawn-fcgi start
+
 popd
-
-# TODO: Stop Thin
-
-[[ -d $app_dir ]] && rm -rf "$app_dir"
-mv "$tmp_dir" "$app_dir"
-
-pushd "$app_dir"
-rake db:migrate RAILS_ENV="production"
-popd
-
-# TODO: Start Thin