We have a docker-compose.yml for development environments and I'm currently in the process of simplifying this[1] so that Docker for Mac/Windows will be able to spin up an environment with little effort.

We use ansible for provisioning beta/staging and production. We have yet to open source the ansible repository but, since we're switching to GitLab CI/CD, the deployment process will soon be publicly accessible - even for production.

1: https://gitlab.com/gitlab-org/gitter/webapp/merge_requests/1... so that

They probably do have some sort of automation, but it's likely specific to their environment.

We use Ansible / packer & terraform. Open sourcing this repo will be fairly complicated but it may make more sense for us to publish a k8s helm chart or more complete, production-ready docker-compose.yml

you are already using docker-compose.yml. you should use definitely do a production ready docker swarm deployment. you only will need to do incremental changes to your docker-compose

Make a merge request.