Comment 15 for bug 1581864

Because sudo can be different in some systems, this worked best for me:

# Fix for Nginx PID problem in Ubuntu 16.04 in an EC2 instance
sudo systemctl stop nginx
sudo mkdir /etc/systemd/system/nginx.service.d
# build the file in root where no sudo is needed
printf "[Service]\nExecStartPost=/bin/sleep 0.1\n" > override.conf
sudo cp override.conf /etc/systemd/system/nginx.service.d/override.conf
sudo systemctl daemon-reload
sudo systemctl start nginx