node.js - 由于无法运行 ps ax 错误，无法在 Docker 容器中运行 Meteor 应用程序

Question

我从 Dockerfile 创建了一个 Docker 镜像来运行示例 Meteor 应用程序。我的 Dockerfile 如下。

FROM node:0.10.30

RUN curl https://install.meteor.com/ | sh
RUN npm install -g meteorite

RUN cd /tmp && npm install libxmljs exec-sync path
RUN mkdir -p /home/app && cp -a /tmp/node_modules /home/app/

ADD src/ /home/app/

WORKDIR /home/app

ENV PORT 3000
EXPOSE 3000

我的代码使用了 3 个 npm 包 libxmljs、exec-sync 和路径，它们都已成功安装。 Meteor 应用程序代码和 .meteor 文件夹被复制到 docker 镜像内的 /home/app 中。但是当我尝试运行 Meteor 应用程序时，出现以下错误。

sudo docker run -t -i 46630d0dc02e meteor
[[[[[ ~home/app ]]]]]

=> Started proxy.
=> Starting MongoDB... -
/.meteor/tools/cef2bcd356/lib/node_modules/fibers/future.js:206
                        throw(ex);
                              ^
Error: Couldn't run ps ax: {"killed":false,"code":127,"signal":null}; Command failed: /bin/sh: 1: ps: not found
    at Object.Future.wait (/.meteor/tools/cef2bcd356/lib/node_modules/fibers/future.js:326:15)
    at findMongoPids (/.meteor/tools/cef2bcd356/tools/run-mongo.js:89:14)
    at findMongoAndKillItDead (/.meteor/tools/cef2bcd356/tools/run-mongo.js:119:14)
    at launchOneMongoAndWaitForReadyForInitiate (/.meteor/tools/cef2bcd356/tools/run-mongo.js:234:5)
    at launchMongo (/.meteor/tools/cef2bcd356/tools/run-mongo.js:496:7)
    at _.extend._startOrRestart (/.meteor/tools/cef2bcd356/tools/run-mongo.js:585:19)
    at _.extend.start (/.meteor/tools/cef2bcd356/tools/run-mongo.js:551:10)
    at _.extend.start (/.meteor/tools/cef2bcd356/tools/run-all.js:131:24)
    at Object.exports.run (/.meteor/tools/cef2bcd356/tools/run-all.js:272:10)
    at main.registerCommand.name [as func] (/.meteor/tools/cef2bcd356/tools/commands.js:210:17)
    at /.meteor/tools/cef2bcd356/tools/main.js:949:23
    - - - - -

    at /.meteor/tools/cef2bcd356/tools/run-mongo.js:59:22
    at ChildProcess.exithandler (child_process.js:651:7)
    at ChildProcess.emit (events.js:98:17)
    at maybeClose (child_process.js:755:16)
    at Socket.<anonymous> (child_process.js:968:11)
    at Socket.emit (events.js:95:17)
    at Pipe.close (net.js:465:12)

如果有人能解释错误原因并提出在 docker 容器中运行 meteor 应用程序的解决方案或解决方法，我将不胜感激。

Answer 1

node 图像没有 ps 命令。

$ docker run -t -i node:0.10.30 bash
root@1d5c5e3ec748:/# ps
bash: ps: command not found
root@f1d530730c37:/# find / -name ps -type f
root@f1d530730c37:/# 

使用另一个具有 ps 命令 的基础镜像，或者通过将 RUN 指令添加到您的 Dockerfile 来在您的镜像上安装 ps 命令，如下所示。

FROM node:0.10.30

# Install ps command
RUN apt-get update
RUN apt-get install procps

RUN curl https://install.meteor.com/ | sh
RUN npm install -g meteorite

RUN cd /tmp && npm install libxmljs exec-sync path
RUN mkdir -p /home/app && cp -a /tmp/node_modules /home/app/

ADD src/ /home/app/

WORKDIR /home/app

ENV PORT 3000
EXPOSE 3000

我测试了它，它工作正常。

$ docker run -t -i nacyot/meteor bash
root@0b56bf009532:/home/app/test# meteor create test
root@0b56bf009532:/home/app/test# cd test
root@0b56bf009532:/home/app/test# meteor 
=> App running at: http://localhost:3000/
root@0b56bf009532:/home/app/test# meteor
[[[[[ ~home/app/test ]]]]]

=> Started proxy.
=> Started MongoDB.     
=> Started your app.   

=> App running at: http://localhost:3000/