docker scale nodes

docker scale nodes.md

https://pspdfkit.com/blog/2018/how-to-use-docker-compose-to-run-multiple-instances-of-a-service-in-development/

version: "3"

services:
  db:
    image: postgres:latest
    environment:
      POSTGRES_USER: pspdfkit
      POSTGRES_PASSWORD: password
      # ... other environment variables
  pspdfkit:
    image: "pspdfkit/pspdfkit:latest"

    environment:
      PGUSER: pspdfkit
      PGPASSWORD: password
      # ... other environment variables
    depends_on:
      - db
    ports:
      - "5000"

user  nginx;

events {
    worker_connections   1000;
}
http {
        server {
              listen 80;
              location / {
                proxy_pass http://access-api:80;
              }
        }
}

docker-compose up --scale pspdfkit=3