Update Dockerfile

Author: anjoy8

Dockerfile

@@ -5,11 +5,11 @@
 #如果你想先手动dotnet build成可执行的二进制文件，然后再构建镜像，请看.Api层下的dockerfile。
 
 
-FROM mcr.microsoft.com/dotnet/aspnet:6.0-buster-slim AS base
+FROM mcr.microsoft.com/dotnet/aspnet:6.0-bullseye-slim AS base
 WORKDIR /app
 EXPOSE 80
 
-FROM mcr.microsoft.com/dotnet/sdk:6.0-buster-slim AS build
+FROM mcr.microsoft.com/dotnet/sdk:6.0-bullseye-slim AS build
 WORKDIR /src
 COPY ["Blog.Core.Api/Blog.Core.Api.csproj", "Blog.Core.Api/"]
 COPY ["Blog.Core.Extensions/Blog.Core.Extensions.csproj", "Blog.Core.Extensions/"]