Using Grunt with Java and Maven to Automate JavaScript Tasks.Here are a few articles describing specific use cases for these commands: You can run heroku help buildpacks to get a full list of options for the command. Any process types defined from earlier buildpacks will be ignored. The last buildpack in the list will be used to determine the process types for the application. You can view the complete list of buildpacks for an app by running this command: $ heroku buildpacks This ensures that defaults for that primary language are applied instead of those for another language, and allows Heroku to correctly detect the primary language of your app. The buildpack for the primary language of your app should always be the last buildpack in the list. Thus the Ruby buildpack that was set in the previous example will now be the second buildpack to run. This will insert the Node.js buildpack at the first position in the order of buildpack execution, and move the other buildpacks that are ahead of it down one position. For example, if you need to add the Node.js buildpack to run a Grunt task you can add it with a command like this: $ heroku buildpacks:add -index 1 heroku/nodejs You can add additional buildpacks to your application with the buildpacks:add command. If -index is provided, the command will overwrite the buildpack at the given position. This command accepts an optional -index argument, which can be used to set the position of the given buildpack in the order of execution. For example, if you have a Ruby application, you might set this like so: $ heroku buildpacks:set heroku/ruby You can use the buildpacks:set command from the Heroku CLI to insert a single buildpack in your buildpack execution.

You can define the specific buildpacks your app needs and their order of execution with the Heroku CLI.

Run a daemon process such as pgbouncer with your application.For example, run a JavaScript buildpack for assets and a Ruby buildpack for your application. Run a buildpack for each language your app uses.There are many scenarios in which a single buildpack is not sufficient when building an application.

Heroku install ffmpeg