tma02 / dokku-vendor

A buildpack vendor that caches and serves assets for buildpacks

Dokku Vendor Server

A simple sinatra app that acts like BUILDPACK_VENDOR_URL and downloads requested file to local and serves the file for dokku deploys. Like ruby binaries, bundler etc.

Blog post: https://medium.com/@mbrain0/how-to-speed-up-dokku-deployments-cc2f42015e55

Why?

I'm deploying Rails apps to dokku-powered DO servers located in AMS1 and SGP1, it takes more than 5 or 6 minutes each deploy because its downloading Ruby binaries each time, even worse connection times out sometimes. Its faster if you serve them from the same server.

Installation

only tested for heroku-buildpack-ruby

• Deploy this app to your dokku server.

#server
dokku apps:create dokku-vendor

#local
git clone [e-mail]:beydogan/dokku-vendor.git
cd dokku-vendor
git remote add dokku dokku@SERVER-IP:dokku-vendor
git push dokku master

• Create a persistent storage binded to /tmp/dokku-vendor

#server
sudo mkdir /dokku-vendor
sudo chown dokku /dokku-vendor
dokku storage:mount dokku-vendor /dokku-vendor:/tmp/dokku-vendor

• Use your app url as BUILDPACK_VENDOR_URL to your other apps.

#server
dokku config:set my-rails-app --no-restart BUILDPACK_VENDOR_URL=SERVER-IP:PORT/heroku-buildpack-ruby/

Restricting external access(optional)

You can restrict access from outside of the server by following below. We need to create a nginx config for dokku-vendor app to restrict all IPs except docker subnet(172.17.0.0/16)

#server
mkdir /home/dokku/dokku-vendor/nginx.conf.d/
echo 'allow 172.17.0.0/16; deny all;' > /home/dokku/dokku-vendor/nginx.conf.d/ip_access.conf
chown dokku:dokku /home/dokku/dokku-vendor/nginx.conf.d/ip_access.conf
service nginx reload

• All done! You can just push your app as usual.