How to do it...

To write your first application, follow these steps:

1. Set up the development environment:

        $ cd ~
        cd fabric-samples/first-network
        sudo docker ps
        sudo ./byfn.sh down
        sudo docker rm -f $(sudo docker ps -aq)
        sudo docker network prune
        cd ../fabcar && ls

You will notice that there are a few Node.js file present in fabcar folder such as enrollAdmin.js, invoke.js, query.js, registerUser.js, and package.json and all others packaged into one startFabric.sh file.

1. Install the Fabric client:

        $ sudo npm install -g npm@5.3.0
        $ sudo npm update

You will notice from the following screenshot that the Fabric client 1.3.0 and Fabric CA client 1.30 packages are installed:

1. Execute the following command to launch the network:

        $ sudo ./startFabric.sh node

1. Open a new Terminal to stream the Docker logs:

        $ sudo docker logs -f ca.example.com

This will open the Docker file, which will look similar to the following screenshot:

Next, we will use the Node.js script to run, query, and update the records on Fabric network.