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

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.

only tested for heroku-buildpack-ruby

• Deploy this app to your dokku server.

#server
dokku apps:create dokku-vendor

#local
git clone [email protected]: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/

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.