Heroku Deploy a Slug from One App to Another

heroku_deploy_with_api.sh

curl -i -n -X GET https://api.heroku.com/apps/$STAGING_APP_NAME/releases \                          system
-H "Accept: application/vnd.heroku+json; version=3;" -H "Range: version ..; order=desc"

# EXTRACT THE SLUG ID OUT OF THAT JSON OBJECT

# RELEASE THAT SLUG
curl -X POST -H "Accept: application/vnd.heroku+json; version=3" -n \                             system
-H "Content-Type: application/json" \
-d '{"slug": "$SLUG_ID"}' \
https://api.heroku.com/apps/$PROD_APP_NAME/releases

# RESTART ALL DYNOS
curl -n -X DELETE https://api.heroku.com/apps/$PROD_APP_NAME/dynos \
  -H "Content-Type: application/json" \
  -H "Accept: application/vnd.heroku+json; version=3"