我有一个开发环境,我正在dockerizing,我希望能够重载我的变化,而不必重建docker图像。我使用docker撰写,因为redis是我的应用程序的依赖项之一,我喜欢能够链接一个redis容器

我在docker-compose.yml中定义了两个容器:

node:
  build: ./node
  links:
    - redis
  ports:
    - "8080"
  env_file:
    - node-app.env

redis:
  image: redis
  ports:
    - "6379"

我已经在我的节点应用程序的dockerfile中添加了一个卷,但我如何在卷中挂载主机的目录,以便我对代码的所有实时编辑都反映在容器中?

这是我当前的Dockerfile:

# Set the base image to Ubuntu
FROM    node:boron

# File Author / Maintainer
MAINTAINER Amin Shah Gilani <amin@gilani.me>

# Install nodemon
RUN npm install -g nodemon

# Add a /app volume
VOLUME ["/app"]

# TODO: link the current . to /app

# Define working directory
WORKDIR /app

# Run npm install
RUN npm install

# Expose port
EXPOSE  8080

# Run app using nodemon
CMD ["nodemon", "/app/app.js"]

我的项目是这样的:

/
- docker-compose.yml
- node-app.env
- node/
  - app.js
  - Dockerfile.js

当前回答

有几个选择

短的语法

使用host: guest格式,您可以执行以下任何操作:

volumes:
  # Just specify a path and let the Engine create a volume
  - /var/lib/mysql

  # Specify an absolute path mapping
  - /opt/data:/var/lib/mysql

  # Path on the host, relative to the Compose file
  - ./cache:/tmp/cache

  # User-relative path
  - ~/configs:/etc/configs/:ro

  # Named volume
  - datavolume:/var/lib/mysql

长时间的语法

从docker-compose v3.2开始,您可以使用长语法,允许配置其他可以用短形式表示的字段,如mount类型(volume、bind或tmpfs)和read_only。

version: "3.2"
services:
  web:
    image: nginx:alpine
    ports:
      - "80:80"
    volumes:
      - type: volume
        source: mydata
        target: /data
        volume:
          nocopy: true
      - type: bind
        source: ./static
        target: /opt/app/static

networks:
  webnet:

volumes:
  mydata:

查看https://docs.docker.com/compose/compose-file/#long-syntax-3获取更多信息。

其他回答

下面是我的Node.js应用程序和MongoDB数据库的工作示例:

docker-compose.yml

version: '3'
services: 
    my-app:
        container_name: my-app-container
        restart: always
        build: .
        volumes:
            - './storage:/usr/src/app/storage'
        ports: 
            - "3000:3000"
        links:
            - my-app-db
    
    my-app-db:
        container_name: my-app-db-container
        image: mongo
        restart: always
        volumes:
            - './data:/data/db'          
        ports:
            - "27017:27017"

Dockerfile

FROM node:16.13.2
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
COPY package.json ./
RUN npm install
COPY . /usr/src/app/
EXPOSE 3000
CMD [ "npm", "start"]

在我们提到docker-compose之前,我们必须创建自己的与主机目录映射的docker卷。Yml作为外部

1.创建名为share的卷

docker volume create --driver local \
--opt type=none \
--opt device=/home/mukundhan/share \
--opt o=bind share

2.在你的码头写作中使用它

version: "3"

volumes:
  share:
    external: true

services:
  workstation:
    container_name: "workstation"
    image: "ubuntu"
    stdin_open: true
    tty: true
    volumes:
      - share:/share:consistent
      - ./source:/source:consistent
    working_dir: /source
    ipc: host
    privileged: true
    shm_size: '2gb'
  db:
    container_name: "db"
    image: "ubuntu"
    stdin_open: true
    tty: true
    volumes:
      - share:/share:consistent
    working_dir: /source
    ipc: host

通过这种方式,我们可以与运行在不同容器中的许多服务共享同一个目录

共享redis golang docker-compose.yaml。使用绑定挂载我已经实现了它。

version: '3.0'
services:
  redisdb:
    image: redis:6.0
    restart: always
    ports:
      - "6379:6379"
    container_name: redisdb-container
    command: ["redis-server", "--bind", "redisdb", "--port", "6379"]

  urlshortnerservice:
    depends_on:
      - redisdb
    ports:
      - "7777:7777"
    restart: always
    container_name: url-shortner-container
    image: url-shortner-service
    volumes:
      - ../pkg/repository/filestorage:/pkg/repository/filestorage #host directory:container directory

如果你想在Docker Compose YAML文件的volumes部分中将一个特定的主机目录(下面的例子中是/disk1/prometheus-data)挂载为一个卷,你可以这样做,例如:

version: '3'

services:
  prometheus:
    image: prom/prometheus
    volumes:
      - prometheus-data:/prometheus

volumes:
  prometheus-data:
    driver: local
    driver_opts:
      o: bind
      type: none
      device: /disk1/prometheus-data

顺便说一下,在prometheus的Dockerfile中,你可能会发现如下VOLUME指令,它标志着它保存了来自本机主机的外部挂载的卷等(但是注意:这条指令不是必须的,尽管要将卷挂载到容器中):

Dockerfile

...
VOLUME ["/prometheus"]
...

参考文献:

https://docs.docker.com/compose/compose-file/compose-file-v3/#driver https://docs.docker.com/compose/compose-file/compose-file-v3/#driver_opts

有几个选择

短的语法

使用host: guest格式,您可以执行以下任何操作:

volumes:
  # Just specify a path and let the Engine create a volume
  - /var/lib/mysql

  # Specify an absolute path mapping
  - /opt/data:/var/lib/mysql

  # Path on the host, relative to the Compose file
  - ./cache:/tmp/cache

  # User-relative path
  - ~/configs:/etc/configs/:ro

  # Named volume
  - datavolume:/var/lib/mysql

长时间的语法

从docker-compose v3.2开始,您可以使用长语法,允许配置其他可以用短形式表示的字段,如mount类型(volume、bind或tmpfs)和read_only。

version: "3.2"
services:
  web:
    image: nginx:alpine
    ports:
      - "80:80"
    volumes:
      - type: volume
        source: mydata
        target: /data
        volume:
          nocopy: true
      - type: bind
        source: ./static
        target: /opt/app/static

networks:
  webnet:

volumes:
  mydata:

查看https://docs.docker.com/compose/compose-file/#long-syntax-3获取更多信息。