Very nice, although I'd recommend using the Heroku API through dpl instead of using git to push to Heroku, i.e. something like (depending on your CI base image):

apt-get update -qy
apt-get install -y ruby-dev
gem install dpl
dpl --provider=heroku --app=$PROJECT_NAME-$CI_COMMIT_REF_SLUG --api-key=$HEROKU_API_KEY

Thanks for the tip, David!

Someone asked (although that comment seems to be gone now, but I still think its a good question) if you still need to create the app in Heroku when using dpl: Yes, of course, the dpl part can be used instead of the git commands in the snippet above, you'd still need the initial curl call to the Heroku API to create the app.

Hi all.

I tried to do similar thing but on bitbucket -- to enabled review apps there. I followed your steps, just used $BITBUCKET_BRANCH instead of $CI_COMMIT_REF_SLUG, but it failed :

No such app as <app_name>-<branch_name>.

Any ideas how to enable review apps there ?

@WitoldSlawko: I don't know anything about Bitbucket, but for the Heroku side: Did you do the initial POST call to the Heroku /apps API to create the App on Heroku and did you use the exact same App name there? Also check the return code / value of that API call, maybe your branch name contains characters that are not allowed in an app name on Heroku (I had that error once).

Hi @david.klotz Well I looked in logs: and I have seen this: { "id":"invalid_params", "message":"Name is too long (maximum is 30 characters)" }

Ah now I see that my <app_name>-<branch_name> is 36 characters long. Hmm, any ideas with which I can replace the <branch_name> AND is UNIQ per branch?? My <app_name> has got 12 characters. :/

@WitoldSlawko If it doesn't have to be super-beautiful, how about something like <app_name>-<commit_hash> from e.g. git rev-parse --short HEAD?