Install Drupal through the Docker Composer.

DockerToDrupal.txt

Here is the docker command to launch a MySQL 5.7 container, name it "DrupalMysql", set a 
few environment variables, expose the MySQL port 3306 as 3308 on the local host and daemonise it:

docker run   \
  --name DrupalMysql   \
  -e MYSQL_ROOT_PASSWORD=my-secret-pw   \
  -e MYSQL_DATABASE=drupal   \
  -e MYSQL_USER=drupal   \
  -e MYSQL_PASSWORD=drupal   \
  -p 3308:3306   \
  -d   \
  mysql:5.7


Here is the docker command to launch Drupal 8 in a "Drupal8" container, link it to the previous container's MySQL port, 
expose it's web port 80 as 8010 on the local host and daemonise it:

docker run   \
  --name Drupal8   \
  --link DrupalMysql:mysql   \
  -p 8010:80   \
  -d   \
  drupal:8