Create WordPress nginx droplet on digital ocean using Docker

do-wordpress.sh

#!/bin/bash

echo "Enter the hostname that you'd like to create:"
read HOSTNAME

# Can be defined as an environment variable
if [ -z "$DO_TOKEN" ]; then
  echo "Enter your Digital Ocean access token:"
  read DO_TOKEN
fi

# Can be defined as an environment variable
if [ -z "$PUBLIC_KEYS" ]; then
  echo "Enter your public keys followed by Ctrl-D:"
  PUBLIC_KEYS=$(cat)
fi

docker-machine create \
  --driver digitalocean \
  --digitalocean-backups=true \
  --digitalocean-region=lon1 \
  --digitalocean-access-token=$DO_TOKEN \
  $HOSTNAME

# Set the context for docker-machine
eval "$(docker-machine env $HOSTNAME)"

docker run -p 80:80 -p 3306:3306 --restart=always --name docker-wordpress-nginx -d -v /wordpress/uploads:/usr/share/nginx/www/wp-content/uploads -v /wordpress/plugins:/usr/share/nginx/www/wp-content/plugins -v /wordpress/themes:/usr/share/nginx/www/wp-content/themes eugeneware/docker-wordpress-nginx

# Give the machine some swap
docker-machine ssh $HOSTNAME \
  "
    fallocate -l 2G /swapfile && \
    chmod 600 /swapfile && \
    mkswap /swapfile && \ 
    swapon /swapfile && \
    swapon -s \
    sudo bash -c 'echo \"/swapfile   none    swap    sw    0   0\" >> /etc/fstab' && \
    sysctl vm.swappiness=10 && \
    sudo bash -c 'echo \"vm.swappiness=10\" >> /etc/sysctl.conf' && \
    sysctl vm.vfs_cache_pressure=50 && \
    sudo bash -c 'echo \"vm.vfs_cache_pressure = 50\" >> /etc/sysctl.conf' \
  "
echo $PUBLIC_KEYS | docker-machine ssh $HOSTNAME sudo bash -c 'cat >> /root/.ssh/authorized_keys'

# Print the IP for the user
docker-machine ip $HOSTNAME