Adds help command (flyteorg#1622)

* Adds help command

Introduces help command in makefile. Adds comments along with make targets to display in make help section.

Signed-off-by: Hasmukh K Mistry <[email protected]>

* Makes changes

Makes changes based on suggestions

Signed-off-by: Hasmukh K Mistry <[email protected]>

* Updates make file

Removes unused target from makefile

Signed-off-by: Hasmukh K Mistry <[email protected]>

Co-authored-by: Hasmukh K Mistry <[email protected]>

Makefile

@@ -13,7 +13,7 @@ kustomize:
 	KUSTOMIZE_VERSION=3.9.2 bash script/generate_kustomize.sh
 
 .PHONY: helm
-helm: 
+helm: ## Generate K8s Manifest from Helm Charts.
 	bash script/generate_helm.sh
 
 .PHONY: release_automation
@@ -22,21 +22,15 @@ release_automation:
 	bash script/release.sh
 
 .PHONY: deploy_sandbox
-deploy_sandbox:
+deploy_sandbox: 
 	bash script/deploy.sh
 
-# launch dockernetes and execute tests
-.PHONY: end2end
-end2end:
-	@end2end/launch_dockernetes.sh
-
-# execute tests in the current kubernetes context
 .PHONY: end2end_execute
-end2end_execute:
+end2end_execute: ## Execute tests in the current kubernetes context
 	@end2end/execute.sh
 
 .PHONY: install-piptools
-install-piptools:
+install-piptools: ## Install pip-tools
 	pip install -U pip-tools
 
 .PHONY: doc-requirements.txt
@@ -58,17 +52,22 @@ prepare_artifacts:
 	bash script/prepare_artifacts.sh
 
 .PHONE: helm_update
-helm_update:
+helm_update: ## Update helm charts' dependencies.
 	helm dep update ./charts/flyte/
 
 .PHONY: helm_install
-helm_install:
+helm_install: ## Install helm charts
 	helm install flyte --debug ./charts/flyte -f ./charts/flyte/values-sandbox.yaml --create-namespace --namespace=flyte
 
 .PHONY: helm_upgrade
-helm_upgrade:
+helm_upgrade: ## Upgrade helm charts
 	helm upgrade flyte --debug ./charts/flyte -f ./charts/flyte/values-sandbox.yaml --create-namespace --namespace=flyte
 
 .PHONY: docs
 docs:
 	make -C rsts clean html SPHINXOPTS=-W
+
+.PHONY: help
+help: SHELL := /bin/sh
+help: ## List available commands and their usage
+	@awk 'BEGIN {FS = ":.*?##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n\nTargets:\n"} /^[0-9a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-20s\033[0m %s\n", $$1, $$2 } ' $(MAKEFILE_LIST)