asp.net核心存储镜像wwwroot docker

Question

我有一个.net 6 web api。

当用户上传图像时，它应该存储在wwwroot文件夹中。

当我运行docker时，我从后端收到了这个错误：

backend    | Unhandled exception. System.IO.DirectoryNotFoundException: /wwwrootimages/
backend    |    at Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(String root, ExclusionFilters filters)
backend    |    at Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(String root)
backend    |    at Program.<Main>$(String[] args) in /RealEstateAPI/Program.cs:line 65
backend exited with code 139

这是我的Docker文件：

FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /
COPY RealEstateAPI/appsettings.json ./RealEstateAPI/AppSettings.json
COPY RealEstateAPI/appsettings.Development.json ./RealEstateAPI/AppSettings.Development.json
COPY RealEstateAPI/wwwroot ./RealEstateAPI/
COPY . .
RUN dotnet restore "RealEstateAPI/RealEstateAPI.csproj"
COPY . .
WORKDIR "/RealEstateAPI"
RUN dotnet build "RealEstateAPI.csproj" -c Release -o /build
FROM build AS publish
RUN dotnet publish "RealEstateAPI.csproj" -c Release -o /publish
FROM base AS final
WORKDIR /
COPY --from=publish /publish .
ENTRYPOINT ["dotnet", "RealEstateAPI.dll"]

如何创建wwwRoot卷并存储用户在运行时上传的图像？

• 音量将在Heroku中，因为docker图像也将在那里

Answer 1

文件系统在Heroku中是短暂的。上传到磁盘将只是暂时的。您应该上传到云存储系统(azure blobs、AWS S3等(，并将URL保存在某个数据库中。