第一次构建初始化项目自带的dockerfile，内容如下：

#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/aspnet:5.0-buster-slim AS base
#WORKDIR /app
#EXPOSE 80
#EXPOSE 443
#
#FROM mcr.microsoft.com/dotnet/sdk:5.0-buster AS build
#WORKDIR /src
#COPY ["WaterCloud.Web/WaterCloud.Web.csproj", "WaterCloud.Web/"]
#RUN dotnet restore "WaterCloud.Web/WaterCloud.Web.csproj"
#COPY . .
#WORKDIR "/src/WaterCloud.Web"
#RUN dotnet build "WaterCloud.Web.csproj" -c Release -o /app/build
#
#FROM build AS publish
#RUN dotnet publish "WaterCloud.Web.csproj" -c Release -o /app/publish
#
#FROM base AS final
#WORKDIR /app
#COPY --from=publish /app/publish .
#RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
#RUN echo 'Asia/Shanghai' >/etc/timezone
#ENTRYPOINT ["dotnet", "WaterCloud