mysql - 如何使用env_file在docker-compose中隐藏Mysql密码

Question

version: '3'

services:
  db:
    image: "mysql:5.7"
    volumes:
      - data-mysql:/var/lib/mysql

    ports:
      - '3306:3306'

    environment:
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}

volumes:
  data-mysql:
    driver: local

谢谢
曼尼

Answer 1

不需要环境文件。如果仅在docker compose environment定义中使用变量名，则其值将自动从主机传输到容器:

services:
  db:
    image: "mysql:5.7"
    ports: ['3306:3306']
    environment:
      MYSQL_ROOT_PASSWORD: 

从documentation:

Environment variables with only a key are resolved to their values on the machine Compose is running on, which can be helpful for secret or host-specific values.

如果由于某种原因您想要或需要使用一个环境文件，您还可以:

services:
  db:
    image: "mysql:5.7"
    ports: ['3306:3306']
    env_file:
    - production.env

并在production.env文件(或任何您命名的文件)中，只需放入key=value行:

MYSQL_ROOT_PASSWORD=7op-s3cr37

另请参见The “env_file” configuration option。