Locale Buildpack

In order to reduce the stack image size, the heroku 16 stack doesn't include language packs by default.
You may still want to use a custom language pack though.

heroku buildpacks:add heroku-community/locale

Create a .locales file at your app's root, with all the locales you need. Example:

de_DE
fr_FR

Commit that file and trigger a new build. The specified locales will be installed by the buildpack.

You can test this buildpack in a local docker container with the following command:

make compile

Then, to connect to the container:

docker-compose run test bash