A Heroku buildpack for setting the ssh private key as part of the application build. It's meant to be used as part of a setup using multiple buildpacks, so other buildpacks can authenticate with hosts using ssh keys, for instance to install dependencies from private git repositories.
Configure Multiple Buildpacks
Option 1: Heroku CLI or Dashboard
Add the buildpack to your Heroku app either using the CLI or the Heroku dashboard. The
ssh-private-key-buildpack needs to run before any buildpack trying to get ssh access. In the following example, it runs before the
$ heroku buildpacks:set --index 1 https://github.com/debitoor/ssh-private-key-buildpack.git $ heroku buildpacks:add heroku/go
Option 2: Use
Instead of setting the buildpacks directly with Heroku they can also be configured using a
.buildpacks in combination with
$ heroku buildpacks:set https://github.com/heroku/heroku-buildpack-multi.git
The same example given for the CLI use would have the following
$ cat .buildpacks https://github.com/debitoor/ssh-private-key-buildpack.git https://github.com/heroku/heroku-buildpack-go
Configure SSH Key
Set the private key environment variable
SSH_KEY of your Heroku app (note that the key needs to be base64 encoded).
$ heroku config:set SSH_KEY=$(cat path/to/your/keys/id_rsa | base64)
By default the buildback adds Github to
known_hosts. However you can configure your app to allow custom hosts, too. All that's needed is the set
SSH_HOSTS for you app to a comma-separated list of hosts, e.g.
$ heroku config:set SSH_HOSTS="firstname.lastname@example.org,example.com"