How to document the Makefile with the Symfony style

Makefile

.DEFAULT_GOAL := help

ifndef CI_JOB_ID
	# COLORS
	GREEN  := $(shell tput -Txterm setaf 2)
	YELLOW := $(shell tput -Txterm setaf 3)
	WHITE  := $(shell tput -Txterm setaf 7)
	RESET  := $(shell tput -Txterm sgr0)
	TARGET_MAX_CHAR_NUM=30
endif

help:
	@echo "${GREEN}My Appplication${RESET} https://app.docker"
	@awk '/^[a-zA-Z\-\_0-9]+:/ { \
		helpMessage = match(lastLine, /^## (.*)/); \
		if (helpMessage) { \
			helpCommand = substr($$1, 0, index($$1, ":")); helpMessage = substr(lastLine, RSTART + 3, RLENGTH); \
			printf "  ${YELLOW}%-$(TARGET_MAX_CHAR_NUM)s${RESET} ${GREEN}%s${RESET}\n", helpCommand, helpMessage; \
		} \
		isTopic = match(lastLine, /^###/); \
	    if (isTopic) { printf "\n%s\n", $$1; } \
	} { lastLine = $$0 }' $(MAKEFILE_LIST)



# Lines below show an exemple of declaration for a beautiful self documented Makefile !


#################################
Project:

## Install environment from scratch
install: xxx

## Start containers
start: xxx


#################################
RabbitMQ:

## Create RabbitMQ exchanges and queues and setup the bindings
rabbitmq: wait-rabbitmq xxx

## Purge all RabbitMQ queues
rabbitmq-purge: rabbitmq


#################################
Database:

db-create: xxx # will not be listed as available command

## Generate synchronised data
db-reload-fixtures: xxx