Documentation for FlowAuth can be found in the main FlowKit documentation.
You need MySQL client installed on your host machine before you can run the FlowAuth backend locally.
On Mac:
brew install mysql
On Ubuntu:
sudo apt install mysql-client default-libmysqlclient-dev
The startup script needs access to the FlowKit environment variables. The easiest option is to just link them:
ln -s ../development_environment .env
Then run
bash start.sh