Setup ghost and docker

[nathan-isaac]

• https://github.com/docker-library/docs/tree/master/ghost
• https://docs.ghost.org/concepts/config/#section-running-ghost-with-config-env-variables
• https://github.com/docker-library/ghost
• docker-library/ghost#125
• BretFisher/dogvscat#5
• https://docs.docker.com/engine/swarm/secrets/#use-secrets-in-compose

Install on server

https://get.docker.com/

1. $ curl -fsSL get.docker.com -o get-docker.sh
2. $ sh get-docker.sh