This role installs the latest version of Docker from the official Docker repositories. All the other roles I've found seemed to be way more opinionated. This one just installs docker-engine, starts the service, then leaves you alone. Good day sir.

• docker_opts - Arguments passed to the docker daemon at start time
• docker_env - Dictionary of environment variables to set for the docker daemon

Use the docker_env variable to set the HTTP_PROXY and/or HTTPS_PROXY environment variables:

- hosts: all
  roles:
    - role: DavidWittman.docker
      docker_env:
        HTTP_PROXY: "http://127.0.0.1:8080"
        HTTPS_PROXY: "https://127.0.0.1:8080"

This role can be quickly deployed with Vagrant or with Test Kitchen to deploy and run a set of automated tests with bats.

$ vagrant up

# Install dependencies
$ bundle install
# Deploy, provision, and run tests
$ kitchen test