Adding missing GROUP_ID and USER_ID to env.sh.sample

bin/env.sh.sample

@@ -6,3 +6,5 @@ export COMPOSE=$HOME/config/labkey-compose.yaml
 export DOCKERCOMPOSE=$HOME/.docker/cli-plugins/docker-compose
 export PGPASS=somethingSecret
 #other variables
+export USER_ID=id_of_labkey_user
+export GROUP_ID=group_id_of_labkey_user