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1. To install all dependencies, just runyarn install ornpm install.
2. As we want to run several instances (~nodes) of the code, we need to give a newPORT environment variable to each instance (~node). So, start the node with:PORT=5000 npm start.
3. Other nodes can be added in the same way with a different port:PORT=5001 npm start.
4. As gossiping (the addition of a new node) is not yet implemented, we have to register each node manually using Postman.