Install local SDK without sudo on Unix (#1635)

Author: am11

build.sh

@@ -47,7 +47,7 @@ if [ ! -d "$SCRIPT_DIR/.dotnet" ]; then
   mkdir "$SCRIPT_DIR/.dotnet"
 fi
 curl -Lsfo "$SCRIPT_DIR/.dotnet/dotnet-install.sh" https://dot.net/v1/dotnet-install.sh
-sudo bash "$SCRIPT_DIR/.dotnet/dotnet-install.sh" --version 2.1.503 --install-dir .dotnet --no-path
+bash "$SCRIPT_DIR/.dotnet/dotnet-install.sh" --version 2.1.503 --install-dir .dotnet --no-path
 export PATH="$SCRIPT_DIR/.dotnet":$PATH
 export DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
 export DOTNET_CLI_TELEMETRY_OPTOUT=1