#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
RUN echo "deb http://mirrors.aliyun.com/debian/ stretch main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch main non-free contrib
deb http://mirrors.aliyun.com/debian-security stretch/updates main
deb-src http://mirrors.aliyun.com/debian-security stretch/updates main
deb http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
deb http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib" > /etc/apt/sources.list
RUN apt-get update -y && apt-get install -y libgdiplus && apt-get clean && ln -s /usr/lib/libgdiplus.so /usr/lib/gdiplus.dll
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
COPY ["xxx/xxx.csproj", "xxx/"]
COPY ["xxx.xxx/xxx.xxx.csproj", "xxx.xxx/"]
COPY ["xxx.xxx/xxx.xxx.csproj", "xxx.xxx/"]
COPY ["xxx/xxx.xxx.csproj", "xxx/"]
COPY ["xxx.xxx/xxx.xxx.csproj", "xxx.xxx/"]
COPY ["xxx.xxx/xxx.xxx.csproj", "xxx.xxx/"]
COPY ["xxx.xxx/xxx.xxx.csproj", "xxx.xxx/"]
COPY ["xxx.xxx/xxx.xxx.csproj", "xxx.xxx/"]
COPY ["xxx.xxx/xxx.xxx.csproj", "xxx.xxx/"]
RUN dotnet restore "xxx/xxx.csproj"
COPY . .
WORKDIR "/src/xxx"
RUN dotnet build "xxx.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "xxx.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "xxx.dll"]
参考文章：https://www.cnblogs.com/stulzq/p/10172550.html
https://www.cnblogs.com/stulzq/p/9339250.html