Add dotenv feature

[edouard-lopez]

project	requirement	last updated	tests
motdotla/dotenv	nodeJS	Dec 22, 2022	:heavy_check_mark:
https://github.com/madcoda/dotenv-shell	sh	Dec 30, 2020	:heavy_check_mark:
theskumar/python-dotenv	python	Jan 21, 2023	:heavy_check_mark:
https://github.com/bashup/dotenv	bash	Sep 18, 2019	❌

Criteria

1. Minimal dependencies as we want to run in a wide range of containers (sh is best, language specific is worse)
2. Test to ensure quality and evolution (test+CI is best)
3. Maintained (exit and pull request are merged is best, so we can fix things)

[edouard-lopez]

• https://github.com/kei-s16/example-dotenv-in-makefile
• Including Other Makefiles from make official doc
• Makefile include env file from unix.stackexchange

Make-native solution

#!/usr/bin/env make

include .env
export # give access to variables from .env in task

show:
    [ ! -e .env ] && touch .env || true # for CI
    echo $${VAR_FROM_SHELL}