Add ci stages and stagigng deployment

5 jobs from DEV in 4 minutes 11 seconds (queued for 19 seconds)
Status Job ID Name Coverage
  Testing
passed #1995
flake8

00:05

passed #1996
test

00:08

 
  Build
passed #1997
build_prod_image

00:02

 
  Deploy
passed #1999
ssh-deploy-staging
deploy_staging

03:55

canceled #1998
ssh-deploy-staging
deploy_staging