问题描述
在博文（【.NET Developer】创建ASP.NET Core Blazor项目并打包为Linux镜像发布到Azure应用服务）中我们通过VS 2019可以为项目添加Dockerfile并自动生成Docker Image文件。但是如果不借助于VS2019我们如何来操作呢？
解决步骤
准备Dockerfile
进入项目文件夹中，创建Dockerfile并COPY以下内容：
#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging. #Depending on the operating system of the host machines(s) that will build or run the containers, the image specified in the FROM statement may need to be changed. #For more information, please see https://aka.ms/containercompat FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS base FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build ENV ASPNETCORE_URLS=http://+:8000 WORKDIR /app EXPOSE 8000 EXPOSE 5000 COPY . /app/ ENTRYPOINT ["dotnet", "MyLife.Blazor.Server.dll"]
- FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS base 和 FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build 可以在Docker Hub中查询到对于的版本镜像(https://hub.docker.com/_/microsoft-dotnet-sdk)
- COPY . /app/ 即把dockerfile所在的目录中所有文件复制到镜像中app目录中
生成镜像
通过CMD进入到当前目录， 使用 docker build -t mywebimages . （特别注意：在命令中必须要点.，黄色高亮的部分替代为自定义的镜像名。详细的命令参考Docker说明：https://docs.docker.com/engine/reference/commandline/build/）
当命令运行完成后，在Docker Desktop页面中可以看见当前Images
运行镜像，验证项目运行成功
在Docker Desktop中Run当前Image或者通过docker run命令启动Container： docker run --name testweb -p 8080:8000 mywebimages
命令启动输出：
C:\MyCode\MyLife\MyLife.Blazor\MyLife.Blazor\Server\bin\Release\net5.0\publish>docker run --name testapidemo -p 8080:8000 mywebimages warn: Microsoft.AspNetCore.DataProtection.Repositories.FileSystemXmlRepository[60] Storing keys in a directory 'C:\Users\ContainerUser\AppData\Local\ASP.NET\DataProtection-Keys' that may not be persisted outside of the container. Protected data will be unavailable when container is destroyed. info: Microsoft.Hosting.Lifetime[0] Now listening on: http://[::]:8000 info: Microsoft.Hosting.Lifetime[0] Application started. Press Ctrl+C to shut down. info: Microsoft.Hosting.Lifetime[0] Hosting environment: Production info: Microsoft.Hosting.Lifetime[0] Content root path: C:\app warn: Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware[3] Failed to determine the https port for redirect.
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访问Docker Container指定的端口8080结果为：
附录：如何Push本地Docker中的镜像到ACR(Azure Container Registry)中？
在Azure Container Registry中，有快速入门的文档(Quick Start)，参考里面的步骤即可。只是在登录的时候说明以下。如果使用Access Keys中的用户名和密码。这可以包含在Docker Login命令中。如：
docker login myregistry.azurecr.cn --username 00000000-0000-0000-0000-000000000000 --password eyJhbGciOiJSUzI1NiIs[...]24V7wA
docker tag mywebimages myregistry.azurecr.cn/mywebimages
docker push myregistry.azurecr.cn/mywebimages
详细的步骤见文档：
参考资料：
Docker Hub: https://hub.docker.com/_/microsoft-dotnet-sdk
创建ASP.NET Core Blazor项目并打包为Linux镜像发布到Azure应用服务: https://www.cnblogs.com/lulight/p/14315383.html
windows上用VS2019开发的 .NETCore项目如何打包部署到linux Docker中: https://blog.csdn.net/weixin_48000648/article/details/106524426
Push the image to your registry: https://docs.microsoft.com/en-us/azure/container-registry/container-registry-get-started-docker-cli#push-the-image-to-your-registry
当在复杂的环境中面临问题，格物之道需：浊而静之徐清，安以动之徐生。 云中，恰是如此!
