$ sudo apt-get install snap
$ sudo snap install --classic heroku

$ sudo apt-get install apt-transport-https ca-certificates curl gnupg software-properties-common
$ sudo apt-key fingerprint 0EBFCD88
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
$ sudo apt-get update
$ sudo apt-get install docker-ce
$ sudo usermod -aG docker ubuntu

$ sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
$ sudo chmod +x /usr/local/bin/docker-compose

$ sudo apt-get install fontconfig
$ wget --content-disposition IPAfont00303.zip http://ipafont.ipa.go.jp/old/ipafont/IPAfont00303.php
$ sudo unzip IPAfont00303.zip -d /usr/share/fonts/
$ sudo fc-cache -fv