This answer might be a bit late but it might help for someone who is looking for a solution.
I was able to setup local test network with single/multiple nodes based on the following
For a single node, the libra-swarm package is well documented here https://developers.libra.org/docs/run-local-network and defines easy steps to setup your local test network with defined number of nodes.
If you are planning to use multiple nodes, you can use docker files and shell scripts to create docker images from Libra's github repo and use those images with some container-orchestration system like kubernetes to setup your network. I was able to do this and have it setup using in this github repository.
This answer might be a bit late but it might help for someone who is looking for a solution.
I was able to setup local test network with single/multiple nodes based on the following
libra-swarm
package is well documented here https://developers.libra.org/docs/run-local-network and defines easy steps to setup your local test network with defined number of nodes.