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[ASP.net教程].NET core for docker


本文描述下 .net core 在 docker 里面的玩法

首先按照官方文档先 拉取镜像

docker pull microsoft/dotnet:latest

 

然后就有了 dotnet 这个运行时了,这里以一个 web 项目举例子 先创建一个 web 类型的 project

dotnet new -t web

如果本地没有 dotnet 运行时可以docker run 一个

docker run --rm -it -v /home/hello_dotnet/:/home/hello_dotnet/ microsoft/dotnet:latest

上面这个命令的意思是 让 docker 运行(docker run)一个dotnet:latest的镜像(microsoft/dotnet:latest) 并且把本地的/home/hello_dotnet卷路径挂载到容器的/home/hello_dotnet 下面(-v /home/hello_dotnet/:/home/hello_dotnet/)然后提供交互式模式能够输入输出(-it)退出之后自动删除容器(--rm)

然后进入容器生成类似这样

 

[root@172-16-0-20 home]# docker run --rm -it -v /home/hello_dotnet/:/home/hello_dotnet/ microsoft/dotnet:latestroot@193fb1cf32a6:/# cd /home/hello_dotnet/root@193fb1cf32a6:/home/hello_dotnet# dotnet new -t webCreated new C# project in /home/hello_dotnet.root@193fb1cf32a6:/home/hello_dotnet# lsControllers Data Models Program.cs README.md Services Startup.cs Views appsettings.json bower.json gulpfile.js package.json project.json web.config wwwrootroot@193fb1cf32a6:/home/hello_dotnet#

 

然后更新下包依赖

dotnet restore

直接运行

dotnet run

修改一下默认的监听端口默认是 localhost:5000 不好做代理,把它修改成 0.0.0.0

 

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Threading.Tasks;using Microsoft.AspNetCore.Hosting; namespace WebApplication{  public class Program  {    public static void Main(string[] args)    {      var host = new WebHostBuilder()        .UseUrls("http://0.0.0.0:5000") //添加这一行        .UseKestrel()        .UseContentRoot(Directory.GetCurrentDirectory())        .UseIISIntegration()        .UseStartup<Startup>()        .Build();       host.Run();    }  }}

 

ok 没啥问题 publish 一下

root@193fb1cf32a6:/home/hello_dotnet# dotnet publishPublishing hello_dotnet for .NETCoreApp,Version=v1.0No executable found matching command "npm"

 

额,并不能够 publish 提示找不到 npm, npm 这个不是 node 的包依赖工具么。。 经过查看发现这个生成的 web 依赖了 gulp 所以很蛋疼 默认的容器只有运行时环境(可能主要是为了精简镜像)需要自己在安装 node

这里可以在容器里面把 node 装好或者去其他机器上 publish

apt-get update & apt-get install npm

并且安装完 npm 还不够 还需要 安装 bower gulp

No executable found matching command "bower"

No executable found matching command "gulp"

npm install bower -g

npm install gulp -g

ok 结束了...

Project hello_dotnet (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.

Configuring the following project for use with IIS: '/home/hello_dotnet/bin/Debug/netcoreapp1.0/publish'

Updating web.config at '/home/hello_dotnet/bin/Debug/netcoreapp1.0/publish/web.config'

Configuring project completed successfully

publish: Published to /home/hello_dotnet/bin/Debug/netcoreapp1.0/publish

Published 1/1 projects successfully

退出容器回到服务器上

root@193fb1cf32a6:/home/hello_dotnet/bin/Debug/netcoreapp1.0# exitexit[root@172-16-0-20 home]# lsdata docker-compose hello_dotnet java xiaoming xiaoqiu[root@172-16-0-20 home]# cd hello_dotnet/[root@172-16-0-20 hello_dotnet]# lsappsettings.json bin bower.json Controllers Data gulpfile.js Models node_modules obj package.json Program.cs project.json project.lock.json README.md Services Startup.cs Views web.config wwwroot

 

代码都已经创建好了,现在只要找个运行时 dotnet hello_dotnet.dll 就可以启动 web 了

打包一个镜像 写个 dockerfile 就好

先新建个工作目录整理下结构

[root@172-16-0-20 dotnet]# tree -L 2.├── Dockerfile└── hello_dotnet  ├── appsettings.json  ├── bin  ├── bower.json  ├── Controllers  ├── Data  ├── gulpfile.js  ├── Models  ├── node_modules  ├── obj  ├── package.json  ├── Program.cs  ├── project.json  ├── project.lock.json  ├── README.md  ├── Services  ├── Startup.cs  ├── Views  ├── web.config  └── wwwroot [root@172-16-0-20 dotnet]# docker build -t "hello_dotnet:1.0" ./ [root@172-16-0-20 dotnet]# docker build -t "hello_dotnet:1.0" ./Sending build context to Docker daemon 53.04 MBStep 1 : FROM microsoft/dotnet:latest ---> 4028809f66a4Step 2 : COPY hello_dotnet /home/www ---> 600558b4e65dRemoving intermediate container 0c05fc314674Step 3 : WORKDIR /home/www ---> Running in b5b029517595 ---> c9f05e277de9Removing intermediate container b5b029517595Step 4 : EXPOSE 8080 ---> Running in 2a00bea9393c ---> b921fe0482f0Removing intermediate container 2a00bea9393cStep 5 : CMD dotnet hello_dotnet.dll ---> Running in f770b366be81 ---> 11027359f344Removing intermediate container f770b366be81Successfully built 11027359f344运行[root@172-16-0-20 dotnet]# docker run --rm -it -p 8888:5000 hello_dotnet:1.0info: Microsoft.Extensions.DependencyInjection.DataProtectionServices[0]   User profile is available. Using '/root/.aspnet/DataProtection-Keys' as key repository; keys will not be encrypted at rest.Hosting environment: ProductionContent root path: /home/wwwNow listening on: http://0.0.0.0:5000Application started. Press Ctrl+C to shut down.

 

浏览器访问 http://172.16.0.20:8888

ok 一切正常

 

当然也可以用守护进程的模式运行

docker run -d -p 8888:5000 hello_dotnet:1.0

参考文档

[0] https://dotnet.github.io

[1] https://docs.docker.com/engine/reference/builder

[2] http://stackoverflow.com/questions/34212765/how-do-i-get-the-kestrel-web-server-to-listen-to-non-localhost-requests