modern Makefile for CI/CD, etc, w/AWS ECR. "WA" is 2-letter country-code for Wakanda

Makefile

# System setup
SHELL = bash

AWS_ACCOUNT_ID ?= 100000000001
AWS_REGION ?= wa-north-7
AWS_ACCESS_KEY_ID ?= AKIABLAHBLAHBLAHBLAH
AWS_SECRET_ACCESS_KEY ?= Z9xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx+
DOCKER_REGISTRY ?= $(AWS_ACCOUNT_ID).dkr.ecr.$(AWS_REGION).amazonaws.com

test:  ## Run a basic test suite, currently just the PEP8 style check
	pycodestyle *py --show-source

ecr_login: ## Login to the ECR using credentials
	@eval $$(AWS_ACCESS_KEY_ID=$(AWS_ACCESS_KEY_ID) AWS_SECRET_ACCESS_KEY=$(AWS_SECRET_ACCESS_KEY) aws --region $(AWS_REGION) ecr get-login --no-include-email)

python_install: ## Set up Python virtualenv and install dependencies
	virtualenv -p $$(which python3) ./venv && ./venv/bin/pip install -r requirements.txt

help:  ## Show This Help
	@for line in $$(cat Makefile | grep "##" | grep -v "grep" | sed  "s/:.*##/:/g" | sed "s/\ /!/g"); do verb=$$(echo $$line | cut -d ":" -f 1); desc=$$(echo $$line | cut -d ":" -f 2 | sed "s/!/\ /g"); printf "%-30s--%s\n" "$$verb" "$$desc"; done

travis_setup:  ## Setup the travis environment
	@echo "Unshallowing repo"
	@git fetch --unshallow
	@git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
	@git fetch origin
	@sudo pip install awscli