README.md

lxc launch ubuntu:bionic hoge -c user.user-data="$(cat config.yml)"

config.yml

#cloud-config
# https://dev.mysql.com/doc/mysql-apt-repo-quick-guide/en/#apt-repo-fresh-install
packages:
- mysql-server
apt:
  sources:
    mysql.list:
      source: |
        deb http://repo.mysql.com/apt/ubuntu/ bionic mysql-apt-config
        deb http://repo.mysql.com/apt/ubuntu/ bionic mysql-8.0
        deb http://repo.mysql.com/apt/ubuntu/ bionic mysql-tools
        #deb http://repo.mysql.com/apt/ubuntu/ bionic mysql-tools-preview
        deb-src http://repo.mysql.com/apt/ubuntu/ bionic mysql-8.0
      keyid: 5072E1F5