This.

At $PAST_DAYJOB we've adopted Docker "only" around 2016, and importantly, we've used it almost identically to how we used to deploy "plain" uWSGI or Apache apps: a bunch of VMs, run some Ansible roles, pull the code (now image), restart, done.

The time to move to k8s is when you have a k8s-sized problem. [Looks at Github: 760 releases, 3866 contributors.] Yeah, not now.