Docker-compose switch to version 2
More recently, after the release of Compose 1.6.0+ and Docker 1.10.0+ , version 2 became available.
Added keys: services , volumes , networks . Keys will be deleted: links .
Version 1
# docker-compose.yml app: build: . ports: - '3000:3000' volumes: - .:/home/web links: - db db: image: sameersbn/postgresql ports: - '5432' volumes_from: - db_data env_file: - $HOME/.docker/$APP/db.env db_data: image: tianon/true volumes: - /var/lib/postgresql # config/database.yml development: adapter: postgresql encoding: unicode database: <%= ENV['DB_ENV_DB_NAME'] %> pool: 5 username: <%= ENV['DB_ENV_DB_USER'] %> password: <%= ENV['DB_ENV_DB_PASS'] %> host: <%= ENV['DB_PORT_5432_TCP_ADDR'] %> Version 2
No links , but using env file .
fallback mode
While links work as before only network_mode : bridge.
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# docker-compose.yml version: '2' services: app: build: . ports: - '3000:3000' volumes: - .:/home/web depends_on: - db links: - db network_mode: bridge db: image: sameersbn/postgresql ports: - '5432' volumes: - db_data:/var/lib/postgresql env_file: - $HOME/.docker/$APP/db.env network_mode: bridge volumes: db_data: # config/database.yml development: adapter: postgresql encoding: unicode database: <%= ENV['DB_ENV_DB_NAME'] %> pool: 5 username: <%= ENV['DB_ENV_DB_USER'] %> password: <%= ENV['DB_ENV_DB_PASS'] %> host: <%= ENV['DB_PORT_5432_TCP_ADDR'] %> No links , but using env file .
# docker-compose.yml version: '2' services: app: build: . ports: - '3000:3000' volumes: - .:/home/web depends_on: - db env_file: - $HOME/.docker/$APP/db.env db: image: sameersbn/postgresql ports: - '5432' volumes: - db_data:/var/lib/postgresql env_file: - $HOME/.docker/$APP/db.env volumes: db_data: # config/database.yml development: adapter: postgresql encoding: unicode database: <%= ENV['DB_NAME'] %> pool: 5 username: <%= ENV['DB_USER'] %> password: <%= ENV['DB_PASS'] %> host: <%= ENV['DB_HOST'] %> # $HOME/.docker/$APP/db.env DB_NAME=habrahabr DB_USER=habrahabr DB_PASS=habrahabr DB_HOST=db Thanks for attention.
Source: https://habr.com/ru/post/278083/
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