Question

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

搬运工-compose.yml

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

的package.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"
  }
}

Dockferfile

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

在 docker-compose build 时安装步骤RUN纱线的输出：

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 fsevents@1.1.3: The platform "linux" is incompatible with this module. 
info "fsevents@1.1.3" is an optional dependency and failed compatibility check. Excluding it from installation. 
[3/4] Linking dependencies... 
warning "@rails/webpacker > postcss-cssnext@3.1.0" has unmet peer dependency "caniuse-lite@^1.0.30000697". 
warning " > webpack-dev-server@2.11.1" has unmet peer dependency "webpack@^2.2.0 || ^3.0.0". 
warning "webpack-dev-server > webpack-dev-middleware@1.12.2" 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 以进入容器

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

没有node_modules文件夹，但稍后在容器内运行时： yarn install 输出：

root@11af1818e494:/myapp# yarn install
yarn install v1.3.2
info No lockfile found. 
[1/4] Resolving packages... 
[2/4] Fetching packages... 
info fsevents@1.1.3: The platform "linux" is incompatible with this module. 
info "fsevents@1.1.3" is an optional dependency and failed compatibility check. Excluding it from installation. 
[3/4] Linking dependencies... 
warning "@rails/webpacker > postcss-cssnext@3.1.0" has unmet peer dependency "caniuse-lite@^1.0.30000697". 
warning " > webpack-dev-server@2.11.1" has unmet peer dependency "webpack@^2.2.0 || ^3.0.0". 
warning "webpack-dev-server > webpack-dev-middleware@1.12.2" 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它存在。为什么呢？

Answer 1

这部分Dockerfile安装纱线包：

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

创建文件夹/myapp，将package.json复制到其中并安装纱线包。构建成功，当然，node_modules文件夹位于构建的图像中。

但之后你开始使用以下方式构建图像：

volumes:
  - .:/myapp

表示docker-compose.yaml所在的文件夹内容已装入容器内的/myapp文件夹，因此它涵盖了容器/myapp文件夹的内容。

您不需要将当前文件夹挂载到容器的文件夹即可实现您的目的。只需将其从docker-compose.yaml：

中删除即可

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

修改

但我想要的是在构建图像时，不要获取这些依赖项在旋转容器时。否则我有另一个容器安装de源代码并在需要时使用此node_modules文件夹运行＆＃34; docker-compose up＆＃34;而且我想避免某种情况在node_modules完成之前一直睡不着觉。所以我需要提出这个我的根主机上的文件夹在以某种方式向上容器之前

如果您想实现上述目标，可以使用以下解决方法：

1。您稍微修改Dockerfile：

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/

这意味着纱线包将在/build文件夹内部构建，并在容器启动后复制到/myapp文件夹。

2。您使用的是原始docker-compose.yaml文件：

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

当您启动web容器时：

docker-compose up web

文件夹node_modules被复制到已装入的文件夹，即主机上的.文件夹。

3. 现在您可以启动任何容器，它将包含node_modules内的/myapp文件夹：

docker-compose run web bash

因此，您将能够通过以下方式实现目标：

$ 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

Docker在构建时构成缺少的纱线依赖性

1 个答案: