Heroku Buildpack: Run

Run custom commands during the build process.

Description

This buildpack allows to execute arbitrary commands on the build dyno during the build process.

Just create the file buildpack-run.sh in the root directory of your application and write in this file the commands that you want to execute. This file is then sourced by the compile script of this buildpack. That is, the commands in buildpack-run.sh are executed on the build dyno as they would be part of the compile script.

Available build-specific variables are BUILD_DIR, CACHE_DIR, and ENV_DIR.

The initial working directory is the root directory of your application.

For aborting the build at any point, you can use the exit command with a non-zero exit code, e.g. exit 1.

This buildpack is useful for finding out information about the build process.

Usage

Simply do:

# Create file 'buildpack-run.sh' containing bash commands
echo 'echo "hello world"' >buildpack-run.sh

heroku buildpacks:set https://github.com/weibeld/heroku-buildpack-run.git

The buildpack is now set and will be used on the next git push heroku master.

For more information on how to use custom buildpacks, see https://devcenter.heroku.com/articles/third-party-buildpacks#using-a-custom-buildpack.

Usage together with other buildpacks

You can use multiple buildpacks at the same time as described on https://devcenter.heroku.com/articles/using-multiple-buildpacks-for-an-app:

heroku buildpacks:add --index 1 heroku/ruby
heroku buildpacks:add --index 2 https://github.com/weibeld/heroku-buildpack-run.git

You can always check which buildpacks you have currently added to your app with:

heroku buildpacks

License

Licensed under the MIT License. See LICENSE.md file.