To run locally, you must have nodejs, yarn and npm installed. Install node and npm from: https://nodejs.org/en/
Install yarn from the command line
npm install --global yarn
open terminal and enter directory
cd hydra
install dependencies:
yarn install
run server
yarn serve
go to https://localhost:8000 in the browser
Edit frontend/public/index.html to load 'bundle.js' rather than 'bundle.min.js'
Run development server
yarn dev