This buildpack installs gifski on your dynos.
In your project root:
$ heroku buildpacks:add https://github.com/voxable/heroku-buildpack-gifski --app HEROKU_APP_NAMEYou can set a GIFSKI_VERSION config variable to control the installed version:
$ heroku config:set GIFSKI_VERSION=1.7.1 --app HEROKU_APP_NAMESince the installation is cached you might want to clean it out due to config changes.
$ heroku plugins:install heroku-repo
$ heroku repo:purge_cache -app HEROKU_APP_NAMENote : Replace
HEROKU_APP_NAMEWith Your App Name Ex. sticker-bot1