Docker 在构建时组成缺失的纱线依赖项

在Dockerfile中运行yarn install时无法获取node_modules文件夹

test-sof
├── docker-compose.yml
├── Dockerfile
├── package.json
└── yarn.lock

docker-compose.yml

version: '3'
services:
  web:
    build: .
    volumes:
      - .:/myapp

包.json

{
  "name": "site",
  "private": true,
  "dependencies": {
    "@rails/webpacker": "^3.2.1",
    "babel-preset-react": "^6.24.1",
    "prop-types": "^15.6.0",
    "react": "^16.2.0",
    "react-dom": "^16.2.0",
    "reactjs": "^1.0.0",
    "underscore": "^1.8.3"
  },
  "devDependencies": {
    "webpack-dev-server": "^2.11.1"
  }
}

多克弗菲勒

FROM ruby:2.5

RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
    curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
    echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
    apt-get update && \
    apt-get install -qq -y build-essential libpq-dev nodejs yarn

RUN mkdir /myapp
WORKDIR /myapp

ADD ./package.json /myapp/

RUN yarn install

运行纱线安装步骤的输出docker-compose 构建:

Step 6/6 : RUN yarn install
---> Running in 3a0e7095ec81 
yarn install v1.3.2 
info No lockfile found. 
[1/4] Resolving packages... 
[2/4] Fetching packages... 
info [email protected] /cdn-cgi/l/email-protection: The platform "linux" is incompatible with this module. 
info "[email protected] /cdn-cgi/l/email-protection" is an optional dependency and failed compatibility check. Excluding it from installation. 
[3/4] Linking dependencies... 
warning "@rails/webpacker > [email protected] /cdn-cgi/l/email-protection" has unmet peer dependency "caniuse-lite@^1.0.30000697". 
warning " > [email protected] /cdn-cgi/l/email-protection" has unmet peer dependency "webpack@^2.2.0 || ^3.0.0". 
warning "webpack-dev-server > [email protected] /cdn-cgi/l/email-protection" has unmet peer dependency "webpack@^1.0.0 || ^2.0.0 || ^3.0.0". 
[4/4] Building fresh packages... 
success Saved lockfile. 
Done in 21.11s. 
Removing intermediate container 3a0e7095ec81  
---> 5720579a0f2a 
Successfully built 5720579a0f2a 
Successfully tagged testsof_web:latest

运行命令：docker-compose 运行 web bash进入容器

root@11af1818e494:/myapp# ls    
Dockerfile  docker-compose.yml  package.json

不存在 node_modules 文件夹，但稍后在容器内运行时：纱线安装 output:

root@11af1818e494:/myapp# yarn install
yarn install v1.3.2
info No lockfile found. 
[1/4] Resolving packages... 
[2/4] Fetching packages... 
info [email protected] /cdn-cgi/l/email-protection: The platform "linux" is incompatible with this module. 
info "[email protected] /cdn-cgi/l/email-protection" is an optional dependency and failed compatibility check. Excluding it from installation. 
[3/4] Linking dependencies... 
warning "@rails/webpacker > [email protected] /cdn-cgi/l/email-protection" has unmet peer dependency "caniuse-lite@^1.0.30000697". 
warning " > [email protected] /cdn-cgi/l/email-protection" has unmet peer dependency "webpack@^2.2.0 || ^3.0.0". 
warning "webpack-dev-server > [email protected] /cdn-cgi/l/email-protection" has unmet peer dependency "webpack@^1.0.0 || ^2.0.0 || ^3.0.0". 
[4/4] Building fresh packages... 
success Saved lockfile. 
Done in 13.03s.

然后列出时：

root@11af1818e494:/myapp# ls    
Dockerfile  docker-compose.yml  node_modules  package.json  yarn.lock

文件夹node_modules 存在。为什么？

这部分的Dockerfile安装纱线包：

RUN mkdir /myapp
WORKDIR /myapp
ADD ./package.json /myapp/
RUN yarn install

Folder /myapp被建造，package.json复制到其中并安装纱线包。构建成功了，当然，node_modules文件夹位于构建的图像内。

但之后你开始构建图像：

volumes:
  - .:/myapp

这意味着文件夹的内容docker-compose.yamlis 安装到/myapp容器内的文件夹，因此它覆盖了容器的内容/myapp folder.

您不需要将当前文件夹安装到容器的文件夹即可实现您想要的。只需将其从您的docker-compose.yaml:

version: '3'
services:
  web:
    build: .

现在你可以：

$ docker-compose build
$ docker-compose run web bash
root@558d5b0c2ccb:/myapp# ls -la
total 268
drwxr-xr-x   3 root root   4096 Feb 23 22:25 .
drwxr-xr-x  65 root root   4096 Feb 23 22:36 ..
drwxr-xr-x 818 root root  36864 Feb 23 22:25 node_modules
-rw-rw-r--   1 root root    333 Feb 23 22:07 package.json
-rw-r--r--   1 root root 219075 Feb 23 22:25 yarn.lock

EDIT:

但我想要的是在构建图像时，不要获取这些依赖项 当旋转容器时。否则我还有另一个容器 它安装了源代码并且需要这个node_modules文件夹 运行“docker-compose up”，我想避免某种 丑陋的睡眠直到node_modules完成。所以我需要呈现这个 在以某种方式启动容器之前我的根主机上的文件夹

如果您想实现上述目标，可以使用以下解决方法：

1.你修改Dockerfile一点：

FROM ruby:2.5

RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
    curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
    echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
    apt-get update && \
    apt-get install -qq -y build-essential libpq-dev nodejs yarn

RUN mkdir /build && mkdir /myapp
WORKDIR /build

ADD ./package.json /build/

RUN yarn install

WORKDIR /myapp

CMD cp -a /build/node_modules/ /myapp/

这意味着纱线包将被内置/build文件夹内的图像并复制到/myapp容器启动后的文件夹。

2.你用的是原装的docker-compose.yaml file:

version: '3'
services:
  web:
    build: .
    volumes:
      - .:/myapp

你几时开始web容器：

docker-compose up web

folder node_modules被复制到安装的文件夹，即.主机上的文件夹。

3.现在你可以启动任何容器，它将包含node_modules里面的文件夹/myapp:

docker-compose run web bash

因此，您将能够通过以下方式实现您的目标：

$ docker-compose build && docker-compose up web
$ docker-compose run web bash
root@4b38e60adfa3:/myapp# ls -la
total 64
drwxrwxr-x   3 1000 1000  4096 Feb 24 10:59 .
drwxr-xr-x  66 root root  4096 Feb 24 11:13 ..
-rw-rw-r--   1 1000 1000   497 Feb 24 10:55 Dockerfile
-rw-rw-r--   1 1000 1000    73 Feb 24 09:02 docker-compose.yaml
drwxr-xr-x 818 root root 40960 Feb 24 10:57 node_modules
-rw-rw-r--   1 root root   333 Feb 23 22:07 package.json