在 Docker 容器内启动 Sails.js 会导致 Grunt 错误

Question

我正在创建一个 Sails.js + MongoDB 应用程序并使用 Docker 在本地运行它们。这是我的 Docker 设置的样子：

Docker文件

FROM node:8.9.3-alpine
LABEL Name=web-service Version=1.0.0

# Container configuration
ENV NODE_ENV development
WORKDIR /usr/src/app
COPY ["package.json", "npm-shrinkwrap.json*", "./"]
RUN npm install -g sails@0.12.4 grunt nodemon && npm install && mv node_modules ../
VOLUME /usr/src/app
EXPOSE 1337
CMD nodemon

docker-compose.yml

version: '3.4'

services:
  web-service:
    image: web-service:latest
    build: .
    environment:
      NODE_ENV: development
    ports:
      - 1338:1337 # HOST_PORT is 1338 to avoid conflicts with other Sails.js apps running on host
    volumes:
      - type: volume
        source: .
        target: /usr/src/app
        read_only: true

  mongoDb:
    image: mongo:3.6
    ports:
      - 27018:27017 # HOST_PORT is 27018 to avoid conflicts with other MongoDB databases running on host
    volumes:
      - ./volumes/mongodb:/data/db

我的图像构建得很好，但是，当我运行 docker-compose up 时，我看到以下错误：

web-service_1  | [nodemon] starting `node app.js`
web-service_1  | info:
web-service_1  | info:                .-..-.
web-service_1  | info:
web-service_1  | info:    Sails              <|    .-..-.
web-service_1  | info:    v0.12.4             |\
web-service_1  | info:                       /|.\
web-service_1  | info:                      / || \
web-service_1  | info:                    ,'  |'  \
web-service_1  | info:                 .-'.-==|/_--'
web-service_1  | info:                 `--'-------'
web-service_1  | info:    __---___--___---___--___---___--___
web-service_1  | info:  ____---___--___---___--___---___--___-__
web-service_1  | info:
web-service_1  | info: Server lifted in `/usr/src/app`
web-service_1  | info: To see your app, visit http://localhost:1337
web-service_1  | info: To shut down Sails, press <CTRL> + C at any time.
web-service_1  |
web-service_1  | debug: -------------------------------------------------------
web-service_1  |
web-service_1  | debug: :: Wed Jan 10 2018 18:37:23 GMT+0000 (UTC)
web-service_1  | debug: Environment : development
web-service_1  | debug: Port        : 1337
web-service_1  | debug: -------------------------------------------------------
web-service_1  |
web-service_1  |
web-service_1  | error:
web-service_1  | ------------------------------------------------------------------------
web-service_1  | Fatal error: Unable to create directory "/usr/src/app/.tmp" (Error code: EROFS).
web-service_1  | Running "less:dev" (less) task
web-service_1  | ------------------------------------------------------------------------
web-service_1  | error: Looks like a Grunt error occurred--
web-service_1  | error: Please fix it, then **restart Sails** to continue running tasks (e.g. watching for changes in assets)
web-service_1  | error: Or if you're stuck, check out the troubleshooting tips below.
web-service_1  | error: Troubleshooting tips:
web-service_1  | error:
web-service_1  | error:  *-> Are "grunt" and related grunt task modules installed locally?  Run `npm install` if you're not sure.
web-service_1  | error:
web-service_1  | error:  *-> You might have a malformed LESS, SASS, CoffeeScript file, etc.
web-service_1  | error:
web-service_1  | error:  *-> Or maybe you don't have permissions to access the `.tmp` directory?
web-service_1  | error:      e.g., `/usr/src/app/.tmp` ?
web-service_1  | error:
web-service_1  | error:      If you think this might be the case, try running:
web-service_1  | error:      sudo chown -R YOUR_COMPUTER_USER_NAME /usr/src/app/.tmp

如果我理解正确，应该安装 G运行t 和来自 package.json 的软件包，因为映像构建得很好。这可能是上面错误中所说的权限问题吗？如果是，我如何 CHOWN 我的容器内的文件夹？谢谢。

Answer 1

sails g运行t 任务正在尝试在您设置 read_only: true 的 /usr/src/app 卷上创建一个 .tmp 目录，删除只读和它会工作。

显然，该卷将不再是只读的。在正常的 sails 启动期间，应用程序用户将需要写入 .tmp 目录，但不需要写入卷的其余部分。您可以运行作为用户使用该应用程序，但没有对容器映像中 /usr/src/app 的写入权限，但可以访问 /usr/src/app/.tmp

在 Docker 容器内启动 Sails.js 会导致 Grunt 错误

Starting Sails.js inside a Docker container causes a Grunt error

node.js

docker

sails.js