Update docker-compose file to version 2
Update docker-compose file to version 2

And snappass container will be built from Dockerfile since there is no official image (yet..)
frontfoot/snappass,samteezy/snappass-heroku,frontfoot/snappass,pinterest/snappass,samteezy/snappass-heroku,samteezy/snappass-heroku,pinterest/snappass,frontfoot/snappass,pinterest/snappass