Put the link to the backend server in the .env file this way :
REACT_APP_API_URL=https://www.example.com
There is two way to use the React app :
First, build the app:
docker build -t argos_frontend .
Then you can run it if needed:
docker run -dp 3000:3000 argos_frontend
Install dependencies:
npm install
Run the app:
npm run start