refactor: Update Dockerfile to expose port 8081 instead of 8080

Author: antosubash

InertiaDemo/InertiaDemo/Dockerfile

@@ -2,11 +2,10 @@ FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
 
 WORKDIR /app
 EXPOSE 8080
-
-ENV ASPNETCORE_URLS=http://+:8080
+EXPOSE 8081
 
 USER app
-FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
 ARG configuration=Release
 WORKDIR /src
 COPY ["InertiaDemo/InertiaDemo/InertiaDemo.csproj", "InertiaDemo/InertiaDemo/"]