Update dockerfile to .NET v8

Expedience.Api/Dockerfile

@@ -1,5 +1,5 @@
 # Set the base image
-FROM mcr.microsoft.com/dotnet/sdk:7.0.202-jammy-arm64v8 AS build
+FROM mcr.microsoft.com/dotnet/sdk:8.0-jammy-arm64v8 AS build
 
 # Set the working directory
 WORKDIR /src
@@ -22,7 +22,7 @@ ARG TARGET_RUNTIME=linux-x64
 RUN dotnet publish "Expedience.Api/Expedience.Api.csproj" -c Release -o /app/publish --self-contained --runtime $TARGET_RUNTIME
 
 # Set the base image for the final runtime
-FROM mcr.microsoft.com/dotnet/aspnet:7.0.4-jammy-arm64v8
+FROM mcr.microsoft.com/dotnet/sdk:8.0-jammy-arm64v8 AS build
 
 # Set the working directory
 WORKDIR /app