@knutole - 👍
/cc @springmeyer

is docker image finished?

Some good candidates (Apache License): https://github.com/jawg/docker-mapnik3.

Travis can also build the Dockerfile on each commit: https://docs.travis-ci.com/user/docker/#building-a-docker-image-from-a-dockerfile.

I can make a pull request which adds a Dockerfile which can be build automatically by Dockerhub for each release (and the latest commits of branches like master and v3.0.x). Would this be acceptable?

Furthermore, python-mapnik and node-mapnik can also use Docker images which would build their bindings to the Mapnik Docker image.