Basically follow this post. There are a few steps you probably need to take:
- Install heroku toolbelt : this one is obvious if you are using a PC
- Install rubyinstaller : I’m not so sure about this one, but if you want to use the bundle install command you’ll need to have the rails environment installed on your local PC
- Use bundle install without rmagick : the rubyinstaller will install a whole bunch of libraries and packages but rmagick. I don’t know how to install it so I just exclude it by bundle install –without rmagick. I suppose if it’s not necessary to build the redmine on your local PC you can just skip these two steps
- Generate SSH public key : heroku requires SSH public key authorization
And that’s it.