docker

docker run -v $(pwd)/src:/app/src -d -p 3000:3000 --name react-app react-image
  ----- for linux and unix without env file
  
docker run -e CHOKIDAR_USEPOLLING=true -v %cd%\src:/app/src:ro -d -p 3000:3000 --name react-app react-image 
----- for windows without env file

docker run --envfile -v %cd%\src:/app/src:ro -d -p 3000:3000 --name react-app react-image


-v is bindmount


docker build -t react-image .    ------ build docker image from the Dockerfile instructions
docker ps  ---- to see available containers
docker exec -it react-app bash ----  to see the files in the container
docker rm react-app -f ----- to stop the container