This document discusses moving from running Docker containers using the Docker run command to using Docker Compose. It introduces Docker Compose as a tool for defining and running multi-container Docker applications. It provides examples of using Docker Compose to run a WordPress site with MySQL instead of using complex Docker run commands. It also covers installing Docker Compose, the structure of a Compose file in YAML format, and common Docker Compose commands.

1. From Docker run
To Docker compose
Fitra Aditya
fitra@qiscus.com

2. Overview
● Run simple container
$ docker run hello-world

3. Overview
● Run container with given name, environment
variable, and publish port
$ docker run --name mysql-server -e
MYSQL_PASS=root -p 3306:3306 -d fitra/mysql-
minimalistic

4. Overview
● Linked containers
WORDPRESS + MYSQL

5. Overview
● Linked containers
$ docker run --name mysql-server -e
MYSQL_PASS=admin -p 3306:3306 -d
fitra/mysql-minimalistic
$ docker run --name wordpress-site --link
db:db -e DB_PASS=admin -p 80:80 -d
fitra/wordpress-sample

6. Make it simple!
● Shell script
● Makefile
● Docker compose

7. Make it simple!
● Shell script
run_db() {
docker run --name $DB_CONTAINER -e MYSQL_PASS=$DB_PASS -p
$DB_PORT:3306 -d $DB_IMAGE
}
run_web() {
docker run --name $WEB_CONTAINER --link
$DB_CONTAINER:$DB_CONTAINER -e DB_PASS=$DB_PASS -p
$WEB_PORT:80 -d $WEB_IMAGE
}
run() {
run_db
run_web
}

8. Make it simple!
● Makefile
run: run_db run_web
run_db:
docker run --name $(DB_CONTAINER) -e MYSQL_PASS=$(DB_PASS)
-p $(DB_PORT):3306 -d $(DB_IMAGE)
run_web:
docker run --name $(WEB_CONTAINER) --link
$(DB_CONTAINER):$(DB_CONTAINER) -e DB_PASS=$(DB_PASS)
-p $(WEB_PORT):80 -d $(WEB_IMAGE)

9. Make it simple!
● Docker compose
web:
image: fitra/wordpress-sample
links:
- db
ports:
- "8000:80"
environment:
DB_NAME: wordpress
DB_USER: admin
DB_PASS: "admin"
db:
image: fitra/mysql-minimalistic
environment:
MYSQL_PASS: "admin"

10. Docker Compose

11. Docker compose
● Originated from fig
● One binary to manage multiple containers,
volumes, and networks on a single docker
host
● Move your lengthy docker run commands to
a YAML file

12. Installation
● Via pip
● Download the binary

13. Compose file
version: 2
services:
web:
build: .
links:
- db
ports:
- 8000:80
environment:
DB_NAME: wordpress
DB_USER: admin
DB_PASS: admin
volumes:
- ./wp-content:/app/wp-content
db:
image: fitra/mysql-minimalistic
environment:
MYSQL_PASS: admin

14. Compose file
● More compose file reference
https://docs.docker.com/compose/compose-file/

15. Command line
● $ docker-compose build
● $ docker-compose create
● $ docker-compose up
● $ docker-compose start
● $ docker-compose run

16. Command line
● More command line reference
https://docs.docker.com/compose/reference/

17. Usage
● More command line reference
https://docs.docker.com/compose/reference/

18. Example

19. Thank you
Fitra Aditya
<fitra@g.pl>