Install nginx on Ubuntu 12.04 LTS

List of actions (taken from nginx: Linux packages):

• wget http://nginx.org/keys/nginx_signing.key
• sudo apt-key add nginx_signing.key
• Add following lines to the file /etc/apt/sources.list:
  deb http://nginx.org/packages/ubuntu/ codename nginx
  deb-src http://nginx.org/packages/ubuntu/ codename nginx
• sudo apt-get update
• sudo apt-get install nginx