Question

我试图在Docker容器中运行一个小服务器应用程序

index.js

var server_port = 3111
, http     = require('http')
, mosca    = require('mosca')
, dispatch = require('dispatch')
, httpServ = http.createServer(
    dispatch({
        '/': function(req, res, next){
            console.log('in route');
        }
    })
);

httpServ.listen(server_port, function() {
    console.log("listening on", server_port);
});

的package.json

{
  "dependencies": {
    "dispatch": "^1.0.0"
  },
  "description": "",
  "engines": {
    "node": ">= 0.10.4"
  },
  "main": "index.js",
  "name": "SimpleServer",
  "version": "0.0.1"
}

Dockerfile

FROM    centos:centos6

# Enable EPEL for Node.js
RUN     rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
# Install Node.js and npm
RUN     yum install -y npm

# Install nodemon
RUN npm install -g nodemon

# Bundle app source
COPY . /src
# Install app dependencies
RUN cd /src; npm install

# Expose port
EXPOSE  3111

# Run app using nodemon
RUN echo "***" && pwd && echo "***"
CMD ["nodemon", "/src/index.js"]

在Docker终端中，在SimpleServer工作目录中，命令$ docker build -t test_simple .导致Successfully built 43c8806574f4。到目前为止，在容器（例如$ docker run -p 3111 test_simple）中运行映像的任何尝试都会导致代码退出，并且服务器未运行。

$ docker run -p 3111 test_simple
19 Aug 07:22:56 - [nodemon] v1.4.1
19 Aug 07:22:56 - [nodemon] to restart at any time, enter `rs`
19 Aug 07:22:56 - [nodemon] watching: *.*
19 Aug 07:22:56 - [nodemon] starting `node /src/index.js`
Master: 16
19 Aug 07:22:57 - [nodemon] clean exit - waiting for changes before restart

$ docker run -d -P test_simple node /src/index.js
a0a56ec5c13161bc37b523be0e32edec0a43ca82e7db88ddb2a91688f745b24b

$ docker ps -l
CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS                     PORTS               NAMES
a0a56ec5c131        test_simple         "node /src/index.js"   6 seconds ago       Exited (0) 6 seconds ago                       jolly_bohr

我不知道发生了什么，以及服务器退出的原因。任何反馈都表示赞赏。感谢。

Answer 1

您可以使用docker run --rm -it test_simple bash将shell添加到容器中，然后尝试手动运行nodemon /src/index.js并找出可能出现的问题，并直接运行node而不是调试此问题时nodemon。

此外，最好以the official node image

为基础

Docker应用程序处于退出（0）状态

1 个答案: