cloud-init config for GitHub-hosted runner on Ubuntu 20.04

cloud-init-config-for-github-runner.yml

package_update: true
package_upgrade: true
groups:
  - docker
  - lxd
users:
  - default
  - name: runner
    gecos: GitHub-hosted runner User
    groups: docker, lxd
    ssh_import_id:
      - gh:higebu
    sudo: ALL=(ALL) NOPASSWD:ALL
    shell: /bin/bash
runcmd:
  - mkdir -p /etc/apt/keyrings
  - curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
  - echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
  - apt-get update
  - apt-get install -y vim jq git make wget apt-transport-https ca-certificates curl software-properties-common docker-ce docker-ce-cli containerd.io docker-compose-plugin python3-pip python3-venv
  - systemctl enable docker
  - systemctl start docker
  - mkdir -p /home/runner/actions-runner
  - chown runner:runner /home/runner/actions-runner
  - cd /home/runner/actions-runner
  - curl -O -L https://raw.githubusercontent.com/actions/runner/main/scripts/create-latest-svc.sh
  - chmod +x ./create-latest-svc.sh
  - RUNNER_CFG_PAT=_PAT_ bash ./create-latest-svc.sh -s _GITHUB_ORG_ -u runner -l ubuntu-focal
  - pip3 install pipx
  - echo 'export PATH="$PATH:/home/runner/.local/bin"' >> /home/runner/.bashrc
  - echo '/home/runner/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin' > /home/runner/actions-runner/runner/.path
  - chown runner:runner /home/runner/actions-runner/runner/.path
power_state:
  mode: reboot

0 * * * * docker system prune -af --filter "until=1h"