ubuntuにcomposerをインストール

参考
https://mebee.info/2020/06/02/post-10844/

sudo apt install -y php libapache2-mod-php php-gd php-xml php-cli php-mbstring php-soap php-xmlrpc php-zip

curl -sS https://getcomposer.org/installer | php

sudo mv composer.phar /usr/local/bin/composer
sudo chmod +x /usr/local/bin/composer
source ~/.bashrc

確認

composer -v