如何使用docker-container运行Web应用程序？

如何解决如何使用docker-container运行Web应用程序？

我有一个简单的网络应用，其中包含 index.html ， app.js 和 package.json 文件。
现在，我想通过docker-container运行它。在我的本地计算机上，我可以先使用npm install然后再运行npm start来运行该应用程序。
当我尝试通过docker-compose up运行它时，收到以下错误消息：

Couldn't connect to Docker daemon at http+docker://localunixsocket - is it running?
If it's at a non-standard location,specify the URL with the DOCKER_HOST environment variable

我的 Dockerfile 如下所示：

FROM node:8.11
WORKDIR /usr/src/app
ARG NODE_ENV
ENV NODE_ENV $NODE_ENV
COPY package.json /usr/src/app/
RUN npm install
COPY . /usr/src/app
    
# replace this with your application's default port
EXPOSE 8000
CMD [ "npm","run","dev" ]

和 docker-compose.yml 看起来像这样：

version: "2" 
services:
  web:
    build: .
    command: nodemon -L --inspect=0.0.0.0:5858
    volumes:
      - .:/usr/src/app
    ports:
      - "8000:8000"
      - "5858:5858"

实际上，对于调试模式，该应用程序应在localhost：8000或localhost：5858下运行。

任何想法，Dockerfile或docker-compose.yml有什么问题吗？我已经尝试过here中描述的修复程序，但是这两个建议对我都不起作用，因此肯定还有其他错误。

预先感谢和亲切问候。
PS：如果您需要更多代码，请随时告诉我，我将其添加到问题中。

更新：package.json如下：

{
  "name": "custom-meta-model","version": "0.0.0","description": "An bpmn-js modeler extended with a custom meta-model","main": "app/index.js","scripts": {
    "all": "grunt","dev": "grunt auto-build"
  },"keywords": [
    "bpmnjs-example"
  ],"author": {
    "name": "Nico Rehwaldt","url": "https://github.com/nikku"
  },"contributors": [
    {
      "name": "bpmn.io contributors","url": "https://github.com/bpmn-io"
    }
  ],"license": "MIT","devDependencies": {
    "babel-core": "^6.26.3","babel-preset-env": "^1.7.0","babelify": "^8.0.0","grunt": "^1.2.0","grunt-browserify": "^5.3.0","grunt-contrib-watch": "^1.1.0","grunt-contrib-connect": "^2.1.0","grunt-contrib-copy": "^1.0.0","load-grunt-tasks": "^5.1.0","stringify": "^5.2.0"
  },"dependencies": {
    "bpmn-js": "^7.2.0","diagram-js": "^6.6.1","jquery": "^3.5.1"
  }
}

更新2：现在看起来好点了，我更正了Dockerfile中的CMD-Command。现在输出告诉我未找到“咕unt声”。具体：

Step 9/9 : CMD [ "npm","dev" ]
 ---> Running in f51692a86908
Removing intermediate container f51692a86908
 ---> 53e88bbb46c4
Successfully built 53e88bbb46c4
Successfully tagged overlayexample2_web:latest
Recreating overlayexample2_web_1
Attaching to overlayexample2_web_1
web_1  | 
web_1  | > custom-meta-model@0.0.0 dev /usr/src/app
web_1  | > grunt auto-build
web_1  | 
web_1  | sh: 1: grunt: not found
web_1  | npm ERR! code ELIFECYCLE
web_1  | npm ERR! syscall spawn
web_1  | npm ERR! file sh
web_1  | npm ERR! errno ENOENT
web_1  | npm ERR! custom-meta-model@0.0.0 dev: `grunt auto-build`
web_1  | npm ERR! spawn ENOENT
web_1  | npm ERR! 
web_1  | npm ERR! Failed at the custom-meta-model@0.0.0 dev script.
web_1  | npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
web_1  | npm WARN Local package.json exists,but node_modules missing,did you mean to install?
web_1  | 
web_1  | npm ERR! A complete log of this run can be found in:
web_1  | npm ERR!     /root/.npm/_logs/2020-08-21T17_03_50_937Z-debug.log
overlayexample2_web_1 exited with code 1

我该如何解决？

也许必须修改Gruntfile.js，目前看起来像这样：

module.exports = function(grunt) {

  require('load-grunt-tasks')(grunt);
  grunt.loadNpmTasks('grunt-docker');

  grunt.initConfig({

    browserify: {
      options: {
        transform: [
          [ 'stringify',{
            extensions: [ '.bpmn' ]
          } ],[ 'babelify',{
            global: true
          } ]
        ]
      },watch: {
        options: {
          watch: true
        },files: {
          'dist/index.js': [ 'app/**/*.js' ]
        }
      },app: {
        files: {
          'dist/index.js': [ 'app/**/*.js' ]
        }
      }
    },copy: {
      diagram_js: {
        files: [ {
          src: require.resolve('diagram-js/assets/diagram-js.css'),dest: 'dist/css/diagram-js.css'
        } ]
      },app: {
        files: [
          {
            expand: true,cwd: 'app',src: ['**/*.*','!**/*.js'],dest: 'dist'
          }
        ]
      }
    },watch: {
      options: {
        livereload: false
      },samples: {
        files: [ 'app/**/*.*' ],tasks: [ 'copy:app' ]
      },},connect: {
      livereload: {
        options: {
          port: 8000,livereload: true,hostname: '*',open: false,base: [
            'dist'
          ]
        }
      }
    }
  });

  // tasks

  grunt.registerTask('build',[ 'browserify:app','copy' ]);

  grunt.registerTask('auto-build',[
    'copy','browserify:watch','connect:livereload','watch'
  ]);

  grunt.registerTask('default',[ 'build' ]);
};

解决方法

您的Docker服务未运行，您需要手动启动 Docker Desktop 。

,

您必须在系统中启用并启动Docker守护程序。

如果您使用的是Linux，请尝试：sudo systemctl enable docker && sudo systemctl start docker

如果未将systemctl识别为命令，则应使用：service docker start。

第一次运行systemctl start是必需的，因为enable仅在重启后自动启动守护程序。启用后，它将在启动时自动启动。

,

Dockerfile和docker-compose.file都没问题。

尝试使用sudo运行：

sudo docker-compose up