Preparing the network

We need to perform the following steps before generating network cryptographic material:

1. Clone the Fabric (https://github.com/hyperledger/fabric/) source code repository
2. Run make docker to build Docker images for the peers and orderers
3. Run make configtxgen cryptogen to generate the necessary tools to run the network creation commands described in this section
4. Clone the Fabric-CA (https://github.com/hyperledger/fabric-ca) source code repository
5. Run make docker to build the Docker images for the MSPs