Ubunutu + Dokku + Docker apt-get update issue

This has been confirmed to be a bug in Dokku. You can view the issue on GitHub.

Upgrading buildstep will resolve the problem:

$ git clone https://github.com/progrium/buildstep.git
$ cd buildstep
$ git pull origin master
$ sudo make build

Quick and dirty hack:

• Copy all sources from digitalocean server (/etc/apt/sources.list) to your apt-repositories
• Go to /var/lib/dokku/plugins/dokku-apt
• Replace in pre-build:

if [ -f $DIR/apt-repositories ]; then
    apt-get update
    apt-get install -y software-properties-common
    cat "$DIR/apt-repositories" | while read repository; do
        add-apt-repository -y "\$repository"
    done
fi

with the following:

if [ -f $DIR/apt-repositories ]; then
    cat $DIR/apt-repositories > /etc/apt/sources.list
    apt-get update
    apt-get install -y software-properties-common
fi

• Update dokku plugins (not sure, if required):

cd -
dokku plugins-install

• Push!

Yep, I have the same error. Everything until http://archive.ubuntu.com quantal-security works fine, then starting with quantal/main amd64 the 404s come in spades. The server itself, as it seems, uses different set of repositories, so apt-get update works fine.

Edit: You may try to use sources from /etc/apt/sources.list on your server, by specifying those in apt-repositories, in your repo.