Include docs about localnet-build & localnet-start for development and testing of osmosis-core

[MbBrainz]

Summary

I was trying to find how to run a localOsmosis version of osmosis with some customisation, but i couldn't find it anywhere in the docs. It would be nice to at least mention it at docs->build.html or preferably with some explanation/context.

Problem Definition

There is no documentation about running a localOsmosis version of Osmosis for a specific branch or some customisation.

Proposal

Add some documentation of running localOsmosis using make localnet-build and make localnet-start

---

[daniel-farina]

Good call!

We need to document this https://github.com/osmosis-labs/osmosis/blob/main/Makefile

###############################################################################
###                                Localnet                                 ###
###############################################################################

localnet-keys:
	. tests/localosmosis/keys.sh

localnet-build:
	@docker build -t local:osmosis -f tests/localosmosis/Dockerfile .

localnet-build-state-export:
	@docker build -t local:osmosis-se --build-arg ID=$(ID) -f tests/localosmosis/mainnet_state/Dockerfile-stateExport .

localnet-start:
	@docker-compose -f tests/localosmosis/docker-compose.yml up

localnet-start-state-export:
	@docker-compose -f tests/localosmosis/mainnet_state/docker-compose-state-export.yml up

localnet-stop:
	@docker-compose -f tests/localosmosis/docker-compose.yml down

localnet-remove: localnet-stop
	PWD=$(shell pwd)
	@docker run --user root -v ${PWD}/tests/localosmosis/.osmosisd:/root/osmosis ubuntu /bin/sh -c "rm -rf /root/osmosis/*"

localnet-remove-state-export:
	@docker-compose -f tests/localosmosis/mainnet_state/docker-compose-state-export.yml down

.PHONY: all build-linux install format lint \
	go-mod-cache draw-deps clean build build-contract-tests-hooks \
	test test-all test-build test-cover test-unit test-race benchmark

[daniel-farina]

Updated here
https://docs.osmosis.zone/localosmosis