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在给 .net core 应用的写 dockerfile 的时候一直有个苦恼,就是如果有很多个项目,在 dockerfile 里写起来就会很繁琐,有很多项目文件要 copy,dockerfile 还不支持直接批量复制项目文件,今天要改的一个项目也是有好多个项目文件,不想再一个一个复制,于是 google 一下看有没有比较好的解决方案,找到一个折中的解决方案,分享一下
copy */*.csproj ./
原来的 dockerfile
from mcr.microsoft.com/dotnet/core/sdk:3.0-alpine as build-env workdir /src # copy csproj and restore as distinct layers copy activityreservation.common/*.csproj activityreservation.common/ copy activityreservation.models/*.csproj activityreservation.models/ copy activityreservation.dataaccess/*.csproj activityreservation.dataaccess/ copy activityreservation.business/*.csproj activityreservation.business/ copy activityreservation.helper/*.csproj activityreservation.helper/ copy activityreservation.wechatapi/*.csproj activityreservation.wechatapi/ copy activityreservation.adminlogic/*.csproj activityreservation.adminlogic/ copy activityreservation.api/*.csproj activityreservation.api/ copy activityreservation/activityreservation.csproj activityreservation/ # run dotnet restore activityreservation/activityreservation.csproj ## diff between netcore2.2 and netcore3.0 workdir /src/activityreservation run dotnet restore # copy everything and build copy . . run dotnet publish -c release -o out activityreservation/activityreservation.csproj # build runtime image from mcr.microsoft.com/dotnet/core/aspnet:3.0-alpine label maintainer="weihanli" workdir /app copy --from=build-env /src/activityreservation/out . expose 80 entrypoint ["dotnet", "activityreservation.dll"]
修改之后的 dockerfile
from mcr.microsoft.com/dotnet/core/sdk:3.0-alpine as build-env workdir /src # copy csproj and restore as distinct layers # https://andrewlock.net/optimising-asp-net-core-apps-in-docker-avoiding-manually-copying-csproj-files-part-2/ copy */*.csproj ./ run for file in $(ls *.csproj); do mkdir -p ${file%.*}/ && mv $file ${file%.*}/; done ## diff between netcore2.2 and netcore3.0 workdir /src/activityreservation run dotnet restore # copy everything and build copy . . run dotnet publish -c release -o out activityreservation/activityreservation.csproj # build runtime image from mcr.microsoft.com/dotnet/core/aspnet:3.0-alpine label maintainer="weihanli" workdir /app copy --from=build-env /src/activityreservation/out . expose 80 entrypoint ["dotnet", "activityreservation.dll"]
是不是精简了许多,来看一下修改前后的对比,更明显的对比一下:
核心代码:
# 拷贝所有的二级目录下的项目文件 copy */*.csproj ./ # 根据项目文件名称创建项目文件夹,并移动项目文件到对应的项目目录下 run for file in $(ls *.csproj); do mkdir -p ${file%.*}/ && mv $file ${file%.*}/; done
注:上面的方法适用于项目文件目录名称和项目文件名称一致的情况,默认创建的项目应该都会符合这样的要求,如果你的项目文件是三级目录,如 src/*/*.csproj
的,需要自己根据项目情况调整 dockerfile
有没有学到呢~~
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