DEBATE:
where do you deploy your web applications (node/rails/etc) on a linux server?

/srv -
/opt -
/var -
/usr/local -

Heavily depends on the application, sometime simply in a folder in the home directory. Sometimes on a partition, sometimes even an encrypted partition..

I prefer var, and a docker 😀

/srv is the only place

/var - Ubuntu standard, and been doing so ever since starting my Linux journey from Ubuntu.

/srv/users/serverpilot/apps/{app name}/public

I tend to use /opt but going on the other answers I am questioning that a little.

I've looked into Linux root folder naming before, and it didn't look like there were 'rules' per se - so we're just consistent, /opt on all our servers!

@mattjbones there are absolutely rules:
its called the Filesystem Hierarchy Standard (FHS for short)

http://pathname.com/fhs/pub/...