06. Docker Network

Brief

Compose is a tool software come from Docker, which can manage an application from multiple docker containers. You need to define a YAML file docker-compose.yml, to define the relationship among containers. Then, to startup or shutdown with one command.

Download

Official Document
Official Download

Docker Compose

Docker Compose Core Concepts

1. One file
   docker-compose.yml
2. Two elements
   1. service:
   2. project: a set of container comprise a complete business unit, which are defined in docker-compose.yml

Docker Compose Steps

1. Write Dockerfile, define kinds of microservices and build correlated images
2. Use docker-compose.yml define a complete business unit, arrange each container service.
3. Execute docker-compose up command to startup all the applications.

Most Used Commands for Compose

docker-compose -h 
docker-compose up      # startup all docker-compose service
docker-compose up -d   # startup all docker-compose service and run in the backend
docker-compose down    # shutdown and delete container, network, volume and images.
docker-compose exec {service id in yml}  #docker-compose exec docker-
docker-compose ps      # display all containers under current docker-compose 
docker-compose top     # display all containers process under current docker-compose 
docker-compose logs {service id in yml} # display logs
docker-compose config  # check configuration
docker-compose config -q  # check all the configuration, only display when some errors happened
docker-compose restart # restart service
docker-compose start   # start service
docker-compose stop    # stop service

Reference

1. Tutoriaspoint
2. Docker Dockerfile on runoob
3. Dockerfile reference (official)