nginx-lb-sample/docker-compose.yml

webapp1:
  build: .
  dockerfile: docker-webapp.dockerfile
  container_name: hasample_webapp1
  ports:
    - "5091:5090"
    
webapp2:
  build: .
  dockerfile: docker-webapp.dockerfile
  container_name: hasample_webapp2
  ports:
    - "5092:5090"

nginx:
  build: .
  dockerfile: docker-nginx.dockerfile
  container_name: hasample_nginx
  ports:
    - "5000:80"
  links:
    - webapp1
    - webapp2