added upstart script for Discourse

config/unicorn_upstart.conf

@@ -0,0 +1,36 @@
+# you can copy this file to /etc/init/discourse.conf and then start discourse with
+# initctl start discourse
+
+# It assumes Discourse is installed at /var/www/discourse
+# It assumes Discourse is running under the discourse user
+# It assumes an rvm based setup
+
+description "Unicorn upstart for discourse"
+
+stop on runlevel [06]
+
+setuid discourse
+setgid discourse
+
+respawn
+respawn limit 3 30
+
+
+script
+
+exec /bin/bash <<'EOT'
+
+  # set HOME to the setuid user's home, there doesn't seem to be a better, portable way
+  export HOME="$(eval echo ~$(id -un))"
+  export RAILS_ENV=production
+  export RUBY_GC_MALLOC_LIMIT=90000000
+
+  cd /var/www/discourse
+
+  source "$HOME/.rvm/scripts/rvm"
+
+   exec bundle exec unicorn -c config/unicorn.conf.rb
+EOT
+
+end script
+