Install netbase package under Linux

Author: adamrehn

src/ue4docker/dockerfiles/ue4-build-prerequisites/linux/Dockerfile

@@ -30,6 +30,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 		git-lfs \
 		gpg-agent \
 		jq \
+		netbase \
 		python3 \
 		python3-dev \
 		python3-pip \