Drupal 8 Drush export config to gzip tar

drush.bash

# Change working directory to a temporary location
cd ~/temp

# Export config to "config" directory
# Change `@mysite.local` to your local drush alias
drush @mysite.local config-export --destination=~/temp/config

# Tar all files in "config" directory to `config.tar.gz`
tar -czf config.tar.gz -C config .

# `~/temp/config.tar.gz` can now be uploaded