The dokku droplet as installed has a problem with the ruby buildpack, which depends on a nodejs.org download that has recently 301’d. This means no ruby apps are deployable.
It looks like dokku in the droplet wasn’t installed using debian packages, which is the recommended way to run dokku now.
What’s the easiest way to upgrade dokku so I can deploy again?
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Looks like you’ve already figured it out, but for others that come along:
Newer Dokku Droplets do use the Debian packages, but older ones were installed from source. For convenience on those older Droplets, a local checkout of the Dokku git repository can be found in
/root/dokku
To upgrade Dokku, you can run:
Ah, it appears that it was installed from source, so the instructions at https://github.com/progrium/dokku/blob/master/docs/upgrading.md apply.
WARNING: this will result in minutes of downtime.