update docker with new .net 8

.devcontainer/Dockerfile

@@ -1,21 +1,21 @@
-# Use the official .NET 8 SDK image as a base
-FROM mcr.microsoft.com/dotnet/sdk:8.0
+FROM mcr.microsoft.com/dotnet/sdk:8.0-bookworm-slim
 
-# Install dependencies
-RUN apt-get update && apt-get install -y wget apt-transport-https
+RUN apt-get update
+
+RUN apt-get install --yes curl gnupg lsb-release apt-utils
+
+RUN curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg
+
+RUN mv microsoft.gpg /etc/apt/trusted.gpg.d/microsoft.gpg
+
+RUN sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/debian/$(lsb_release -rs 2>/dev/null | cut -d'.' -f 1)/prod $(lsb_release -cs 2>/dev/null) main" > /etc/apt/sources.list.d/dotnetdev.list'
 
 # Add Microsoft package repository and install Azure Functions Core Tools
 RUN wget -qO- https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > /etc/apt/trusted.gpg.d/microsoft.gpg \
     && wget -qO- https://packages.microsoft.com/config/ubuntu/$(lsb_release -rs)/prod.list > /etc/apt/sources.list.d/microsoft-prod.list \
     && apt-get update \
     && apt-get install -y azure-functions-core-tools-4
 
-# Set the working directory
-WORKDIR /workspace
-
-
-# Copy the project files
-COPY . .
+RUN apt-get update
 
-# Restore the project dependencies
-RUN dotnet restore
+RUN apt-get install --yes azure-functions-core-tools-4