【Azure Developer】已發佈好的.NET Core項目文件如何打包爲Docker鏡像文件

問題描述

在博文（【Azure App Service For Container】建立ASP.NET Core Blazor項目並打包爲Linux鏡像發佈到Azure應用服務）中咱們經過VS 2019能夠爲項目添加Dockerfile並自動生成Docker Image文件。可是若是不借助於VS2019咱們如何來操做呢？

 

解決步驟

準備Dockerfile

進入項目文件夾中，建立Dockerfile並COPY如下內容：

#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 能夠在Docker Hub中查詢到對於的版本鏡像(https://hub.docker.com/_/microsoft-dotnet-sdk)
• COPY . /app/ 即把dockerfile所在的目錄中全部文件複製到鏡像中app目錄中

 

生成鏡像

經過CMD進入到當前目錄， 使用 docker build -t mywebimages .  （特別注意：在命令中必需要點.，黃色高亮的部分替代爲自定義的鏡像名。詳細的命令參考Docker說明：https://docs.docker.com/engine/reference/commandline/build/）

 

當命令運行完成後，在Docker Desktop頁面中能夠看見當前Images

 

運行鏡像，驗證項目運行成功

在Docker Desktop中Run當前Image或者經過docker run命令啓動Container： docker run --name testweb -p 8080:8000 mywebimages

 命令啓動輸出：

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.

 

訪問Docker Container指定的端口8080結果爲：

 

 參考資料：

Docker Hub: https://hub.docker.com/_/microsoft-dotnet-sdk

建立ASP.NET Core Blazor項目並打包爲Linux鏡像發佈到Azure應用服務: http://www.javashuo.com/article/p-dxzersbg-oa.html

windows上用VS2019開發的 .NETCore項目如何打包部署到linux Docker中: https://blog.csdn.net/weixin_48000648/article/details/106524426