Docker制作dotnet core控制台程序镜像
基于dotnet SDK
- 新建控制台程序
mkdir /home/console
cd /home/console
dotnet new console
dotnet restore
创建 Dockerfile 文件，参考https://github.com/dotnet/dotnet-docker/blob/master/samples/aspnetapp/Dockerfile
vim /home/console/Dockerfile # ------ FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
WORKDIR /app COPY . /app RUN dotnet run
构建镜像
docker build -t wyt/console:dev .
运行容器
dotnet run --name console-dev wyt/console
基于dotnet Runtime
- 新建控制台程序
mkdir /home/console
cd /home/console
dotnet new console
dotnet restore
using System;
using System.Threading; namespace console
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World from docker!"); Thread.Sleep(Timeout.Infinite);
}
}
}
创建 Dockerfile 文件
FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
WORKDIR /code COPY *.csproj /code
RUN dotnet restore COPY . /code
RUN dotnet publish -c Release -o out FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS runtime
WORKDIR /app
COPY --from=build /code/out /app
ENTRYPOINT ["dotnet", "console.dll"]
构建镜像
docker build -t wyt/console:prod .
运行容器
docker run --name=console-prod wyt/console:prod
镜像大小对比
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
wyt/console prod d2c683338197 minutes ago 260MB
wyt/console dev 93b346366bc5 minutes ago .74GB
mcr.microsoft.com/dotnet/core/sdk 2.2 155911c343f3 days ago .74GB
mcr.microsoft.com/dotnet/core/aspnet 2.2 c56aab97bc42 days ago 260MB
Mysql EF Core 快速构建 web api
- 新建文件夹beta，创建WebAPI项目User.API，添加EFCore引用
Install-Package MySql.Data.EntityFrameworkCore
新建文件夹Data、Models
新建 AppUser.cs
namespace User.API.Models
{
public class AppUser
{
public int Id { get; set; }
public string Name { get; set; }
public string Company { get; set; }
public string Title { get; set; }
}
}
新建 UserContext.cs
namespace User.API.Data
{
public class UserContext:DbContext
{
public UserContext(DbContextOptions<UserContext> options) : base(options)
{ } public DbSet<AppUser> Users { get; set; } protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<AppUser>().ToTable(nameof(Users)).HasKey(t => t.Id); base.OnModelCreating(modelBuilder);
}
}
}
修改 Startup.cs
namespace User.API
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
} public IConfiguration Configuration { get; } // This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<UserContext>(options =>
{
options.UseMySQL(Configuration.GetConnectionString("MysqlUser"));
}); services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
} // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
} app.UseMvc(); InitDatabase(app);
} public void InitDatabase(IApplicationBuilder app)
{
using (var scope=app.ApplicationServices.CreateScope())
{
var userContext = scope.ServiceProvider.GetRequiredService<UserContext>();
//userContext.Database.Migrate();
if (userContext.Users.Count()==)
{
userContext.Users.Add(new AppUser()
{
Name = "wyt"
});
userContext.SaveChanges();
}
}
}
}
}
修改 appsettings.json 添加数据库配置
"ConnectionStrings": {
"MysqlUser": "Server=192.168.103.240;Port=3306;Database=beta_user;Uid=root;Pwd=pwd123456"
}
生成数据库
Add-Migration init
Update-Database
修改 ValuesController.cs 加入依赖注入
namespace User.API.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class ValuesController : Controller
{
private UserContext _userContext; public ValuesController(UserContext userContext)
{
_userContext = userContext;
} // GET api/values
[HttpGet]
public async Task<IActionResult> Get()
{
return Json(await _userContext.Users.FirstOrDefaultAsync(u => u.Name == "wyt"));
}
}
}
访问api
ASPNETCORE WEB API与MYSQL互联
修改 appsettings.json 与 appsettings.Development.json ，采用不同配置
//appsettings.json
{
"Logging": {
"LogLevel": {
"Default": "Warning"
}
},
"AllowedHosts": "*",
"ConnectionStrings": {
"MysqlUser": "Server=db;Port=3306;Database=beta_user;Uid=root;Pwd=pwd123456"
}
}
//appsettings.Development.json
{
"Logging": {
"LogLevel": {
"Default": "Debug",
"System": "Information",
"Microsoft": "Information"
}
},
"ConnectionStrings": {
"MysqlUser": "Server=47.111.84.191;Port=3306;Database=beta_user;Uid=root;Pwd=pwd123456"
}
}
修改 Program.cs 设置80端口
public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseUrls("http://*:80")
.UseStartup<Startup>();
创建 Dockerfile
FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
WORKDIR /code
COPY *.csproj ./
RUN dotnet restore COPY . ./
RUN dotnet publish -c Release -o out FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS runtime
WORKDIR /app
COPY --from=build /code/out ./ EXPOSE ENTRYPOINT ["dotnet", "User.API.dll"]
拷贝到Linux服务器上，并执行下方命令创建镜像
docker build -t wyt/aspnetcore:pred .
[root@localhost User.API]# docker build -t wyt/aspnetcore:pred .
Sending build context to Docker daemon .265MB
Step / : FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
---> 155911c343f3
Step / : WORKDIR /code
---> Using cache
---> 3e2cb7223b3b
Step / : COPY *.csproj ./
---> 6f6d88b83c75
Step / : RUN dotnet restore
---> Running in c538c0a59636
Restore completed in 3.85 sec for /code/User.API.csproj.
Removing intermediate container c538c0a59636
---> 6e45bd786a9c
Step / : COPY . ./
---> 50ac66ac3f97
Step / : RUN dotnet publish -c Release -o out
---> Running in 9febf9972a3d
Microsoft (R) Build Engine version 16.1.+g14b0a930a7 for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved. Restore completed in 667.65 ms for /code/User.API.csproj.
User.API -> /code/bin/Release/netcoreapp2./User.API.dll
User.API -> /code/out/
Removing intermediate container 9febf9972a3d
---> a7c92c3fd98b
Step / : FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS runtime
---> c56aab97bc42
Step / : WORKDIR /app
---> Using cache
---> 12d1df98dc50
Step / : COPY --from=build /code/out ./
---> Using cache
---> b901e53b64f8
Step / : EXPOSE
---> Using cache
---> c61ad551fa76
Step / : ENTRYPOINT ["dotnet", "User.API.dll"]
---> Running in 36c66859c548
Removing intermediate container 36c66859c548
---> 063fc4fe64ed
Successfully built 063fc4fe64ed
Successfully tagged wyt/aspnetcore:pred
运行容器，进行端口映射和容器关联
docker run -d -p : --name aspnetcore --link mysql01:db wyt/aspnetcore:pred
成功访问
Docker Network
- 创建新的桥接网段
# 创建mybridge桥接网段
docker network create -d bridge mybridge
# 显示网络信息
docker network ls
通过桥接网络创建新的 aspnetcore 容器
# 删除之前创建的容器
docker rm aspnetcore -f
# 使用mybridge桥接网段创建新的容器
docker run -d -p : --net mybridge --name aspnetcore wyt/aspnetcore:pred
我们可以通过命令查看容器 aspnetcore 的ip信息，为172.17.0.4
docker inspect aspnetcore
将 mybridge 桥接网段与 mysql01 进行桥接
# 将mybridge网段与mysql01所在网段进行桥接
docker network connect mybridge mysql01
这时可以查看 mysql01 的ip，然后进入 aspnetcore 容器内尝试是否可以ping通
docker exec -it aspnetcore bash
apt-get update -y
apt-get install iputils-ping -y
apt-get install net-tools -y
ping 172.18.0.3
由于我们没有进行数据卷映射，所以配置文件无法更改，备注： appsettings.json 中使用的数据库为db，所以我们只能将 mysql01 改为 db
# 容器重命名
docker rename mysql01 db
方法二
# 进入容器
docker exec -it aspnetcore bash
ls
apt-get install vim -y
# 修改配置
vim appsettings.json
exit
# 重启容器
docker restart aspnetcore
完成
curl http://47.111.84.191:8002/api/values
或者访问
制作 docker compose
- 修改User.API项目
# Startup.cs
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseMvc(); UserContextSeed.SeedAsync(app,loggerFactory);
} # /Data/UserContextSeed.cs
public class UserContextSeed
{ private ILogger<UserContextSeed> _logger;
public UserContextSeed(ILogger<UserContextSeed> logger)
{
_logger = logger;
} public static async Task SeedAsync(IApplicationBuilder app, ILoggerFactory loggerFactory)
{
using (var scope = app.ApplicationServices.CreateScope())
{
var userContext = scope.ServiceProvider.GetRequiredService<UserContext>();
var logger = (ILogger<UserContextSeed>)scope.ServiceProvider.GetService(typeof(ILogger<UserContextSeed>));
logger.LogDebug("Begin UserContextSeed SeedAsync"); userContext.Database.Migrate(); if (userContext.Users.Count() == )
{
userContext.Users.Add(new AppUser()
{
Name = "wyt"
});
userContext.SaveChanges();
}
}
}
}
安装docker-compose
# 下载Docker Compose的当前稳定版本
sudo curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
# https://github.com/docker/compose/releases/download/1.24.1/docker-compose-Linux-x86_64
# 建议迅雷下载后进行重命名，这样速度快
# 对二进制文件应用可执行权限
sudo chmod +x /usr/local/bin/docker-compose
# 测试安装
docker-compose --version
新建文件 docker-compose.yml
version: '' services:
db:
image: mysql/mysql-server
container_name: db
command: mysqld --character-set-server=utf8 --collation-server=utf8_general_ci
restart: always
ports:
- '3306:3306' #host物理直接映射端口为3306
environment:
MYSQL_ROOT_PASSWORD: pwd123456 #root管理员用户密码
MYSQL_USER: jeese #创建jeese用户
MYSQL_PASSWORD: pwd123456 #设置jeese用户的密码
MYSQL_ROOT_HOST: '%'
volumes:
- "/home/wyt/beta/mysql-init:/docker-entrypoint-initdb.d" #设置数据库自动执行脚本目录，目录要存在 web:
build: .
container_name: aspnetcore
ports:
- '8003:80' #host物理直接映射端口为3306
depends_on:
- db
# 初始化脚本mysql-init/init.sql
use mysql;
ALTER USER 'jeese'@'%' IDENTIFIED WITH mysql_native_password BY 'pwd123456';
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'pwd123456';
FLUSH PRIVILEGES;
docker-compose构建
docker-compose build
[root@localhost User.API]# docker-compose build
db uses an image, skipping
Building web
Step / : FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
---> 155911c343f3
Step / : WORKDIR /code
---> Using cache
---> 7525de38c042
Step / : COPY *.csproj ./
---> Using cache
---> 397affedf1a6
Step / : RUN dotnet restore
---> Using cache
---> 964ce7a0de36
Step / : COPY . ./
---> Using cache
---> 5d18774ff1df
Step / : RUN dotnet publish -c Release -o out
---> Using cache
---> 3353849a8dd8
Step / : FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS runtime
---> c56aab97bc42
Step / : WORKDIR /app
---> Using cache
---> 12d1df98dc50
Step / : COPY --from=build /code/out ./
---> Using cache
---> 4e6819b010fe
Step / : EXPOSE
---> Using cache
---> 2ee374887860
Step / : ENTRYPOINT ["dotnet", "User.API.dll"]
---> Using cache
---> 2b06acc1b707
Successfully built 2b06acc1b707
Successfully tagged userapi_web:latest
docker-compose up
[root@localhost User.API]# docker-compose up
Creating network "userapi_default" with the default driver
Creating db ... done
Creating aspnetcore ... done
Attaching to db, aspnetcore
db | [Entrypoint] MySQL Docker Image 8.0.-1.1.
db | [Entrypoint] Initializing database
aspnetcore | warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[]
aspnetcore | No XML encryptor configured. Key {67f35cc4-a4c3--ba07-7a0753ed0d09} may be persisted to storage in unencrypted form.
aspnetcore | Hosting environment: Production
aspnetcore | Content root path: /app
aspnetcore | Now listening on: http://[::]:80
aspnetcore | Application started. Press Ctrl+C to shut down.
db | --05T09::.358708Z [System] [MY-] [Server] /usr/sbin/mysqld (mysqld 8.0.) initializing of server in progress as process
db | --05T09::.360043Z [Warning] [MY-] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
db | --05T09::.360052Z [Warning] [MY-] [Server] --collation-server: 'utf8_general_ci' is a collation of the deprecated character set UTF8MB3. Please consider using UTF8MB4 with an appropriate collation instead.
db | --05T09::.943704Z [Warning] [MY-] [Server] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option.
db | --05T09::.131450Z [System] [MY-] [Server] /usr/sbin/mysqld (mysqld 8.0.) initializing of server has completed
db | [Entrypoint] Database initialized
db | --05T09::.902213Z [System] [MY-] [Server] /usr/sbin/mysqld (mysqld 8.0.) starting as process
db | --05T09::.903376Z [Warning] [MY-] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
db | --05T09::.903389Z [Warning] [MY-] [Server] --collation-server: 'utf8_general_ci' is a collation of the deprecated character set UTF8MB3. Please consider using UTF8MB4 with an appropriate collation instead.
db | --05T09::.456492Z [Warning] [MY-] [Server] CA certificate ca.pem is self signed.
db | --05T09::.477501Z [System] [MY-] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.16' socket: '/var/lib/mysql/mysql.sock' port: MySQL Community Server - GPL.
db | --05T09::.558190Z [System] [MY-] [Server] X Plugin ready for connections. Socket: '/var/run/mysqld/mysqlx.sock'
db | Warning: Unable to load '/usr/share/zoneinfo/iso3166.tab' as time zone. Skipping it.
db | Warning: Unable to load '/usr/share/zoneinfo/leapseconds' as time zone. Skipping it.
db | Warning: Unable to load '/usr/share/zoneinfo/tzdata.zi' as time zone. Skipping it.
db | Warning: Unable to load '/usr/share/zoneinfo/zone.tab' as time zone. Skipping it.
db | Warning: Unable to load '/usr/share/zoneinfo/zone1970.tab' as time zone. Skipping it.
db |
db | [Entrypoint] running /docker-entrypoint-initdb.d/init.sql
db |
db |
db | --05T09::.092496Z [System] [MY-] [Server] Received SHUTDOWN from user root. Shutting down mysqld (Version: 8.0.).
db | --05T09::.191280Z [System] [MY-] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.) MySQL Community Server - GPL.
db | [Entrypoint] Server shut down
db |
db | [Entrypoint] MySQL init process done. Ready for start up.
db |
db | [Entrypoint] Starting MySQL 8.0.-1.1.
db | --05T09::.417600Z [System] [MY-] [Server] /usr/sbin/mysqld (mysqld 8.0.) starting as process
db | --05T09::.419490Z [Warning] [MY-] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
db | --05T09::.419504Z [Warning] [MY-] [Server] --collation-server: 'utf8_general_ci' is a collation of the deprecated character set UTF8MB3. Please consider using UTF8MB4 with an appropriate collation instead.
db | --05T09::.858661Z [Warning] [MY-] [Server] CA certificate ca.pem is self signed.
db | --05T09::.880107Z [System] [MY-] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.16' socket: '/var/lib/mysql/mysql.sock' port: MySQL Community Server - GPL.
db | --05T09::.066024Z [System] [MY-] [Server] X Plugin ready for connections. Socket: '/var/run/mysqld/mysqlx.sock' bind-address: '::' port:
aspnetcore | Application is shutting down...
aspnetcore exited with code
aspnetcore | Hosting environment: Production
aspnetcore | Content root path: /app
aspnetcore | Now listening on: http://[::]:80
aspnetcore | Application started. Press Ctrl+C to shut down.
# 停止docker-compose
# docker-compose down
启动问题解决方式:由于docker-compose.yml文件中存在db依赖，所以要修改/Data/UserContextSeed.cs进行延迟数据库自动初始化
public static async Task SeedAsync(IApplicationBuilder app, ILoggerFactory loggerFactory,int? retry=)
{
var retryForAvaiability = retry.Value;
try
{
using (var scope = app.ApplicationServices.CreateScope())
{
var userContext = scope.ServiceProvider.GetRequiredService<UserContext>();
var logger = (ILogger<UserContextSeed>)scope.ServiceProvider.GetService(typeof(ILogger<UserContextSeed>));
logger.LogDebug("Begin UserContextSeed SeedAsync"); userContext.Database.Migrate(); if (userContext.Users.Count() == )
{
userContext.Users.Add(new AppUser()
{
Name = "wyt"
});
userContext.SaveChanges();
}
}
}
catch (Exception ex)
{
if (retryForAvaiability<)
{
retryForAvaiability++;
var logger = loggerFactory.CreateLogger(typeof(UserContextSeed));
logger.LogError(ex.ToString());
await Task.Delay(TimeSpan.FromSeconds());
await SeedAsync(app, loggerFactory, retryForAvaiability);
}
}
}
