[FEATURE-115] adds PATH_TO_CONFIG env var to provide configuration outside of module/repository

[apoclyps]

What's Changed

adds PATH_TO_CONFIG env var to provide configuration outside of module/repository and adds PATH_TO_CONFIG to config command:

implements #115

Technical Description

Reads PATH_TO_CONFIG from the environment if provided and configures decouple using AutoConfig with the search_path set to use PATH_TO_CONFIG as a value.

Steps to reproduce

The following steps are used to test the configuration using .env and .ini files from within the module/repository (default location set by decouple) and a location specified by an env var.

# defaults to `apoclyps/reviews`
unset REPOSITORY_CONFIGURATION

Testing .env file within the repository

cd /home/apoclyps/workspace/apoclyps/reviews
touch .env
echo "REPOSITORY_CONFIGURATION=python/typeshed" >> .env
python -m reviews config

rm .env

Testing .ini file within the repository

cd /home/apoclyps/workspace/apoclyps/reviews
touch settings.ini
echo "[settings]\nREPOSITORY_CONFIGURATION=python/typeshed" >> settings.ini
python -m reviews config

rm settings.ini

Testing using PATH_TO_CONFIG

cd /home/apoclyps/
touch settings.ini
echo "[settings]\nREPOSITORY_CONFIGURATION=python/typeshed" >> settings.ini
cd /home/apoclyps/workspace/apoclyps/reviews
export PATH_TO_CONFIG=/home/apoclyps/
python -m reviews config