You might want to be careful with this though because if your application is built on the same server where your productive apps consuming some of the memory it could affect performance of your deployment or even take it down.
Dokku allows for deploying apps from images built in CI - which is quite effective if you also test your image artifacts in CI and don't want to build twice.
If you are using our Nomad or Kubernetes plugins, you can also run the apps on servers other than the one you are building on.