Docker Compose

Docker Compose （v2）

在一个yaml文件中定义多个服务，同时启动多个容器。

compose.yaml

• name
• services
• volumes
• secret
• config

docker compose command

# 启动服务
docker compose up
# 在后台启动
docker compose up -d
# 停止服务
docker compose stop
# 停止服务并销毁容器
docker compose down
# 停止服务并销毁一切，包括容器和持久卷
docker compose down --volumes

# The docker compose run command allows you to run one-off commands for your services. 
# For example, to see what environment variables are available to the web service
docker compose run web env

# 指定配置文件
docker compose -f production.yml up

Environment variables

The order of precedence (highest to lowest) is as follows:

1. Set using [docker compose run -e in the CLI](https://docs.docker.com/compose/environment-variables/set-environment-variables/#set-environment-variables-with-docker-compose-run—env)
2. Substituted from your shell
3. Set using just the [environment attribute in the Compose file](https://docs.docker.com/compose/environment-variables/set-environment-variables/#use-the-environment-attribute)
4. Use of the [-env-file argument](https://docs.docker.com/compose/environment-variables/set-environment-variables/#substitute-with—env-file) in the CLI
5. Use of the [env_file attribute](https://docs.docker.com/compose/environment-variables/set-environment-variables/#use-the-env_file-attribute) in the Compose file
6. Set using an [.env file](https://docs.docker.com/compose/environment-variables/set-environment-variables/#substitute-with-an-env-file) placed at base of your project directory
7. Set in a container image in the ENV directive. Having any ARG or ENV setting in a Dockerfile evaluates only if there is no Docker Compose entry for environment, env_file or run --env.

Profiles

If unassigned, the service is always started but if assigned, it is only started if the profile is activated.

类似SpringBoot的application.yaml中的profile