fix: Add Dotnet 8 SDK (#23)

Created Script to Install Dotnet 8 SDK for Runner image.

Dockerfile

@@ -75,6 +75,8 @@ RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s
 COPY ./scripts ./scripts
 RUN chmod +x ./scripts/*
 
+# Install Dotnet 8 SDK
+RUN ./scripts/install_dotnet8.sh
 # Install gcloud CLI
 RUN ./scripts/install_gcloud.sh
 # Install AWS CLI

scripts/install_dotnet8.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# Get Ubuntu version
+declare repo_version=$(if command -v lsb_release &> /dev/null; then lsb_release -r -s; else grep -oP '(?<=^VERSION_ID=).+' /etc/os-release | tr -d '"'; fi)
+
+# Download Microsoft signing key and repository
+wget https://packages.microsoft.com/config/ubuntu/$repo_version/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
+
+# Install Microsoft signing key and repository
+sudo dpkg -i packages-microsoft-prod.deb
+
+# Clean up
+rm packages-microsoft-prod.deb
+
+# Update packages
+sudo apt update
+
+apt-get install -y dotnet-sdk-8.0