Implement behind-the-scene logic which allows one to seamlessly execute a job on a Docker container which runs on a 'machine' runner.

Example configuration to be used to demonstrate the feature:

version: 2.1

jobs:

say-hello:

machine:

image: ubuntu-2004-cuda-11.2:202103-01

runs-on:

docker:

image: docker.io/account/example:latest # All steps will run inside this container

privileged: True

steps:

- checkout

- run:

command: "echo hi there" # This will run inside the docker container