Heroku Ruby Jekyll Buildpack is a fork of Heroku's official Ruby buildpack with added support for generating static Jekyll sites during the build/deployment stage.
With this buildpack you no longer need pre-build the site or commit the _site build directory to your repo. This simplifies the deployment process and keeps the repo clean. All of the standard Ruby tools are maintained in this buildpack, so you can take full advantage of Rack middleware and other useful tools from the Ruby ecosystem.
Create a new Cedar-stack app with this buildpack
heroku create -s cedar --buildpack http://github.com/mattmanning/heroku-buildpack-ruby-jekyll.git
or add this buildpack to your current app
heroku config:add BUILDPACK_URL=http://github.com/mattmanning/heroku-buildpack-ruby-jekyll.git
Create a Ruby web app with dependencies managed by Bundler and a Jekyll site. Heroku-Jekyll-Hello-World can be used as a sample starter.
Push to heroku
git push heroku master
Watch it "Building jekyll site"
Counting objects: 12, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (8/8), done.
Writing objects: 100% (8/8), 1.10 KiB, done.
Total 8 (delta 4), reused 0 (delta 0)
-----> Heroku receiving push
-----> Fetching custom build pack... done
-----> Ruby/Rack app detected
-----> Installing dependencies using Bundler version 1.1.rc
Running: bundle install --without development:test --path vendor/bundle --binstubs bin/ --deployment
Fetching gem metadata from http://rubygems.org/.......
Using RedCloth (4.2.8)
Using posix-spawn (0.3.6)
Using albino (1.3.3)
Using fast-stemmer (1.0.0)
Using classifier (1.3.3)
Using daemons (1.1.4)
Using directory_watcher (1.4.1)
Using eventmachine (0.12.10)
Using kramdown (0.13.3)
Using liquid (2.3.0)
Using syntax (1.0.0)
Using maruku (0.6.0)
Using jekyll (0.11.0)
Using rack (1.3.5)
Using thin (1.3.1)
Using bundler (1.1.rc)
Your bundle is complete! It was installed into ./vendor/bundle
Cleaning up the bundler cache.
Building jekyll site
-----> Discovering process types
Procfile declares types -> web
Default types for Ruby/Rack -> console, rake
-----> Compiled slug size is 7.2MB
-----> Launching... done, v47
-----> Deploy hooks scheduled, check output in your logs
http://www.mwmanning.com deployed to Heroku
To git@heroku.com:mattmanning.git
8f84bc4..9350a12 master -> master
The blog post introducing this buildpack: http://mwmanning.com/2011/11/29/Run-Your-Jekyll-Site-On-Heroku.html.