[Docker] react dev environment

Steps:

• developing container:

  mkdir -p project
  cd .docker/
  ./docker-build.sh
  ./docker-run.sh

• and if everything is successful we are running inside container. At this time we can run basic creation of React app commands:

  cd project/
  npx create-react-app .
  
  npm i ....

• [OPTIONAL] we can override env variables in an .env file:

  PORT=3000
  DOMAIN=localhost
  PUBLIC_URL=http://localhost:3000

• starting project inside container:

  npm start

  ==> http://localhost:3000/

Enjoy!