Dokku hanging after Docker update

Today I wanted to take a stab at getting a rails app deployed with dokku, so I followed the walkthrough found here (

When I try to run dokku postgresql:create app_name it advises me to update docker.

I update docker following the directions found here

I then create the database.

Now when I try git push dokku master it just hangs…

Anyone run into issues with this?

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I had the same problem and found a solution. When I ran dokku postgresql:create app_name, I got the “please update” notice, but actually when I looked in docker containers, the postgresql/app_name got created. Dokku just didn’t see it as its own. So I went nano /home/dokku/app_name/ENV and set my DATABASE_URL environment variable to


according to link. Then when I pushed the app again to dokku, it got the database from the ENV and everything worked smoothly.

Can you point to a tutorial please? I’m having a ‘Your docker version is too old, please update it’ even after apt-get install upgrade…

I ended up doing a manual install of Dokku on a fresh Ubuntu 13.04 to work around this. It’s actually quite easy and works without issue.