Running an arbitrary thing in Docker is far easier than without it. If I want to run the PHP/MySQL-based Matomo, I can just grab the ready-made docker-compose.yml [0] and tell my main nginx to proxy_pass onto it. I don’t need to figure out how to configure MySQL/MariaDB/PHP-FPM and what hacks did my distro introduce to it (at least I’m not using Debian/Ubuntu, so there shouldn’t be that many). Similarly, I can get Zulip in Docker [1] (even if it’s apparently in alpha state) and not mess with the Python packaging trainwreck, and also setting up all of Redis, PostgreSQL, RabbitMQ and memcached.

[0]: https://github.com/matomo-org/docker/tree/master/.examples/n...

[1]: https://github.com/zulip/docker-zulip