Using Composer v1
The ZoneOS platform uses composer version 2.x by default. However, some older plugins may require the first version of composer.
Composer v1 can be installed on a virtual server using the following command:
mkdir -p ~/bin && cd ~/bin && wget https://getcomposer.org/composer-1.phar && mv composer-1.phar composer && chmod +x composer && hash -r
Now composer -V shows: Composer version 1.x
If you want to use the default composer on the server again, you need to remove composer from the ~/bin directory:
rm -f ~/bin/composer
Changing the version of the self-installed Composer
If composer is already installed on the virtual server, you can easily change its version with the following command. The command to change to version 2.x:
composer self-update --2
Command to return to version 1:
composer self-update --1