Runner

To avoid the pit fall of missing a necessary command and to save time, it would be helpful if runner could be installed via a package manager.

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