Install Nginx Mainline / Stable on Ubuntu 16.04

install-nginx-latest.sh

#!/bin/bash

# https://www.nginx.com/resources/wiki/start/topics/tutorials/install/

# Switch to root
sudo su

# Add the mainline release
echo "deb http://nginx.org/packages/mainline/ubuntu/ xenial nginx
deb-src http://nginx.org/packages/mainline/ubuntu/ xenial nginx" > /etc/apt/sources.list.d/nginx.list

# Or add the stable release
#echo "deb http://nginx.org/packages/ubuntu/ xenial nginx
#deb-src http://nginx.org/packages/ubuntu/ xenial nginx" > /etc/apt/sources.list.d/nginx.list

# Install the packages
apt-get -y update
apt-get -y install nginx

# Check the Nginx version
nginx -v

If you are getting this error:

W: GPG error: http://nginx.org/packages/mainline/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ABF5BD827BD9BF62
W: The repository 'http://nginx.org/packages/mainline/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Then you need to add the nginx gpg key to the apt keystore, e.g.:

wget https://nginx.org/keys/nginx_signing.key -O - | sudo apt-key add -