set dev env var

fixes #1
13 jobs for master in 7 minutes and 36 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Backend
passed #700133987
backend:build

00:03:36

passed #673061644
backend:build

00:04:15

 
  Build Frontend
passed #700134222
frontend:build

00:05:36

passed #673061647
frontend:build

00:04:43

 
  Create Heroku
passed #700134229
heruko:create

00:01:05

passed #673061650
heruko:create

00:01:01

 
  Push Docker
passed #700149283
docker:push

00:00:48

passed #673061653
docker:push

00:00:43

failed #700134250
docker:push

00:00:28

 
  Push Heroku
passed #700151901
heruko:push

00:01:05

passed #673061656
heruko:push

00:00:58

failed #700121351
heruko:push

00:00:53

failed #700134259
heruko:push

00:00:56