This buildpack is an inline buildpack (tldr: this repo deploys to Heroku and uses itself as a buildpack) for deploying Mattermost to Heroku. It must used in tandem with This Nginx Buildpack I customized. Since Mattermost is not a 12 factor app, the startup script writes your Heroku environment variables to a config file when the dyno starts up.
MATTERMOST_VERSION to the release version you'd like to install.
MATTERMOST_TYPE to either 'team' or 'enterprise'
Use the deploy menu on the Heroku dashboard to trigger manual deploys.
Activate it as instructed in the docs https://docs.mattermost.com/install/ee-install.html
Copy the snippet above into CLI.