[feature request] Run local (Single Node Testnet ) development network quickly

[paulvi]

Is your feature request related to a problem? Please describe.
local dev network is first stage for running any test as it is the easiest to run and needs least resources

Describe the solution you'd like
I'd like to run local dev network, easy with something like
iris --dev

Describe alternatives you've considered

Currently (iris v1.1.1) does not have this option

irishub % iris version
1.1.1
irishub % which iris
/Users/paul/go/bin/iris
 irishub % iris --help 
IRIS Hub app command

Usage:
  iris [command]

Available Commands:
              
              
  add-genesis-account Add a genesis account to genesis.json
  collect-gentxs      Collect genesis txs and output a genesis.json file
  debug               Tool for helping with debugging your application
  export              Export state to JSON
  gentx               Generate a genesis tx carrying a self delegation
  help                Help about any command
  init                Initialize private validator, p2p, genesis, and application configuration files
  keys                Manage your application's keys
  query               Querying subcommands
  start               Run the full node
  status              Query remote node for status
  tendermint          Tendermint subcommands
  testnet             Initialize files for a simapp testnet
  tx                  Transactions subcommands
  unsafe-reset-all    Resets the blockchain database, removes address book files, and resets data/priv_validator_state.json to the genesis state
  validate-genesis    validates the genesis file at the default location or at the location passed as an arg
  version             Print the application binary version information

Flags:
  -h, --help                help for iris
      --home string         directory for config and data (default "/Users/paul.verest/.iris")
      --log_format string   The logging format (json|plain) (default "plain")
      --log_level string    The logging level (trace|debug|info|warn|error|fatal|panic) (default "info")
      --trace               print out full stack trace on errors

Use "iris [command] --help" for more information about a command.

Additional context

[paulvi]

I found Single Node Testnet in docs
in https://www.irisnet.org/docs/daemon/local-testnet.html#single-node-testnet

but it has many steps instead of just one parameter.

[chengwenxi]

@paulvi A simple way is

iris testnet --v 1

[zhangyelong]

@paulvi Here is the multiple nodes testnet doc , is this meet your requirements?

# Build the linux binary in ./build
make build-linux

# Quick init a 4-node testnet configs
make testnet-init

# Quick start
make testnet-start

[zhangyelong]

Closing stale issue, if you still have problems on this issue, please reopen it :)