With Docker compose, you can configure and start multiple containers with a single yaml file.
Docker Compose Command Against Single ServiceTo start (up), stop, restart or build a single service (container) using the Docker Compose, simply specify the name of the service against which to run the corresponding docker-compose command.
It's a cool tool to make handling container configuration or multiple interconnected containers a bit easier. The “don't use docker-compose in production” statement is motivated by hidden assumptions which are not necessarily valid for everybody, and propagated by unclear communication.
You can start containers by using:
$ docker-compose up -d client
This will run containers in the background and output will be avaiable from
$ docker-compose logs
and it will consist of all your started containers
To start a particular service defined in your docker-compose file. for example if your have a docker-compose.yml
docker-compose start db
given a compose file like as:
version: '3.3'
services:
db:
image: mysql:5.7
ports:
- "3306:3306"
volumes:
- ./db_data:/var/lib/mysql
restart: always
environment:
MYSQL_ROOT_PASSWORD: yourPassword
MYSQL_DATABASE: wordpress
MYSQL_USER: wordpress
MYSQL_PASSWORD: yourPassword
wordpress:
depends_on:
- db
image: wordpress:latest
ports:
- "80:80"
volumes:
- ./l3html:/var/www/html
restart: always
environment:
WORDPRESS_DB_HOST: db:3306
WORDPRESS_DB_USER: wordpress
WORDPRESS_DB_PASSWORD: yourPassword
volumes:
db_data:
l3html:
Some times you want to start mySQL only (sometimes you just want to populate a database) before you start your entire suite.
Starting with docker-compose
1.28.0 the new service profiles are just made for that! With profiles
you can mark services to be only started in specific profiles:
services:
client:
# ...
db:
# ...
npm:
profiles: ["cli-only"]
# ...
docker-compose up # start main services, no npm
docker-compose run --rm npm # run npm service
docker-compose --profile cli-only up # start main and all "cli-only" services
Since docker-compose
v1.5 it is possible to pass multiple docker-compose.yml
files with the -f
flag. This allows you to split your dev tools into a separate docker-compose.yml
which you then only include on-demand:
# start and attach to all your essential services
docker-compose up
# execute a defined command in docker-compose.dev.yml
docker-compose -f docker-compose.dev.yml run npm update
# if your command depends_on a service you need to include both configs
docker-compose -f docker-compose.yml -f docker-compose.dev.yml run npm update
For an in-depth discussion on this see docker/compose#1896.
Oh, just with this:
$ docker-compose up client server database
One good solution is to run only desired services like this:
docker-compose up --build $(<services.txt)
and services.txt file look like this:
services1 services2, etc
of course if dependancy (depends_on), need to run related services together.
--build is optional, just for example.
I actually had a very similar challenge on my current project. That broght me to the idea of writing a small script which I called docker-compose-profile (or short: dcp). I published this today on GitLab as docker-compose-profile.
So in short: I now can start several predefined docker-compose profiles using a command like dcp -p some-services "up -d"
. Feel free to try it out and give some feedback or suggestions for further improvements.
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