node.js - 在docker中运行nodemon(MERN-docker-compose)

Question

我有一个运行MERN应用程序的容器。在我的前端容器中，我正在运行react，并且热重载按预期进行，但是在我的后端容器中，我似乎找不到代码中动态更新的解决方案。我正在尝试使用nodemon程序包，但是我不知道我是否做对了。如果我尝试在nodemon处于 Activity 状态的情况下运行docker，则会收到错误消息。

package.json

{
  "name": "api",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node bin/www",
    "dev": "nodemon bin/www"
  },
  "dependencies": {
    "cookie-parser": "~1.4.3",
    "cors": "^2.8.4",
    "debug": "~2.6.9",
    "express": "~4.16.0",
    "http-errors": "~1.6.2",
    "jade": "~1.11.0",
    "mongoose": "^5.8.4",
    "morgan": "~1.9.0"
  },
  "devDependencies": {
    "nodemon": "^1.19.0"
  }
}

docker-compose.yml

version: "3"
services:
    client:
        image: mhart/alpine-node:12
        build: ./client      
        restart: always
        ports:
            - "3000:3000"
        working_dir: /client
        volumes:
            - ./client:/client
        entrypoint: ["npm", "start"]
        links:
            - api
        networks: 
            - mynetwork
    api:
        build: ./api
        restart: always
        ports:
            - "9000:9000"
        working_dir: /api
        volumes:
            - ./api:/api
            - /api/node_modules 
        depends_on: 
            - mongodb
        networks:
            - mynetwork
    mongodb:
        image: mongo
        restart: always
        container_name: mongodb
        volumes:
            - ./data-node:/data/db
        ports: 
            - 27017:27017
        command: mongod --noauth --smallfiles
        networks: 
            - mynetwork
networks:
    mynetwork:
        driver: bridge

Dockefile (后端)

FROM mhart/alpine-node:12

WORKDIR /api

COPY package*.json /api/

RUN npm install

COPY . /api/

EXPOSE 80

# CMD ["npm", "start"]

CMD ["npm", "run", "dev"]

错误输出(我已在全局安装nodemon)

sh: nodemon: not found
npm ERR! code ELIFECYCLE
npm ERR! syscall spawn
npm ERR! file sh
npm ERR! errno ENOENT
npm ERR! api@0.0.0 dev: `nodemon ./bin/www`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the api@0.0.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

Answer 1

您的容器中没有nodemon。您需要先安装它。在npm i -G nodemon中的COPY package*.json /api/之后插入Dockerfile。