得到“ npm ERR！ enoent：在docker-compose中映射卷时，没有此类文件或目录”

Question

我有一个docker-compose文件，其中包含我的应用的自定义图片和官方的mongo图片。 只要我不尝试为我的应用程序映射卷，它就可以正常工作，而我正在尝试创建开发docker-compose文件。 我觉得我的docker-compose.dev.yml文件中的音量设置有误。 我尝试过以其他方式设置音量，但总是会出错。 我不确定如何映射该卷，以便我对代码所做的任何更改都将在容器中更改

以下是我的docker-compose.dev.yml文件，我的应用程序的Dockerfile和我的package.json文件。 我还将包括我看到的错误

感谢您提供的任何帮助

泊坞窗，compose.dev.yml

version: "3"
services:
  app:
    container_name: database
    restart: always
    build: .
    volumes:
      - ./:/usr/src/app
    ports:
      - "8080:8080"
    links:
      - mongo
  mongo:
    container_name: mongo
    image: mongo:4
    ports:
      - "27017:27017"

Dockerfile

FROM node:10

# Create app directory
WORKDIR /usr/src/app

# Install app dependencies
COPY package*.json ./

RUN npm install

# Bundle app source into container
COPY . .

EXPOSE 8080
CMD [ "npm", "start" ]

的package.json

{
  "name": "database",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node ./bin/www"
  },
  "dependencies": {
    "cookie-parser": "~1.4.3",
    "debug": "~2.6.9",
    "express": "~4.16.0",
    "http-errors": "~1.6.2",
    "morgan": "~1.9.0",
    "pug": "2.0.0-beta11"
  }
}

错误即时通讯...

WARNING: Image for service app was built because it did not already exist. 
To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
Creating mongo ... done
Creating database ... done
Attaching to mongo, database
database | npm ERR! path /usr/src/app/package.json
database | npm ERR! code ENOENT
database | npm ERR! errno -2
database | npm ERR! syscall open
database | npm ERR! enoent ENOENT: no such file or directory, open 
'/usr/src/app/package.json'
database | npm ERR! enoent This is related to npm not being able to find a file.
database | npm ERR! enoent
database |
database | npm ERR! A complete log of this run can be found in:
database | npm ERR!     /root/.npm/_logs/2019-01-11T17_20_49_720Z-debug.log

Answer 1

我的docker-compose.dev.yml中的卷有误

我有

- ./:/usr/src/app

它必须是

- .:/usr/src/app