[CI] Fix build.sh to propagate --network=host to the docker build command (#5336)

* when passing --net=host to build.sh it needs to be also
   sent as --network=host to "docker build", so that both
   build and run will use the same network configuration

Author: leandron

docker/build.sh

@@ -60,6 +60,7 @@ fi
 
 if [[ "$1" == "--net=host" ]]; then
     CI_DOCKER_EXTRA_PARAMS+=('--net=host')
+    CI_DOCKER_BUILD_EXTRA_PARAMS+=("--network=host")
     shift 1
 fi