Create Docker Hosts on DigitalOcean with Docker Machine

create-digitalocean-servers.sh

#!/bin/bash

#Based on: https://github.com/BretFisher/dogvscat/blob/master/create-servers.sh
#For more details, see: https://blog.mattclemente.com/2018/07/15/create-docker-nodes-on-digitalocean-with-shell-script.html

#Approach without Docker Machine: https://gist.github.com/mjclemente/ada1a591bce5f4fedcd6d6d992d95705

args=(
  --driver=digitalocean
  --digitalocean-access-token="${DO_TOKEN}"
  --digitalocean-ssh-key-fingerprint="${SSH_FINGERPRINT}"
  --digitalocean-private-networking=true
  --digitalocean-tags=demotag
)
if [[ -n "${DO_SIZE}" ]]; then
    args+=( --digitalocean-size="${DO_SIZE}" )
fi
if [[ -n "${DO_IMAGE}" ]]; then
    args+=( --digitalocean-image="${DO_IMAGE}" )
fi
if [[ -n "${DO_REGION}" ]]; then
    args+=( --digitalocean-region="${DO_REGION}" )
fi

for server in {1..3}; do
docker-machine create "${args[@]}" \
  dvc${server} &
done