A quick way to use one-off wp-cli commands with Docker. See Part 1: https://gist.github.com/tatemz/504383c921aa5898c49b82d4ee181362

docker-wpcli.sh

#!/bin/bash

cd wordpress-site

cat >> docker-compose.yml <<EOL
my-wpcli:
  image: tatemz/wp-cli
  volumes_from:
    - my-wp
  links:
    - my-wpdb:mysql
  entrypoint: wp  
  command: "--info"
EOL

docker-compose up -d
alias wp="docker-compose run --rm my-wpcli"
wp --info