Andre reflects on how he used to “hate” Docker because, during his time at DZone, it was being pushed as a one-size-fits-all solution. He explains that what eventually changed his mind was realizing how useful Docker is for isolating messy dependencies (Postgres, Redis, open-source apps) so they don’t “pollute” his servers, and for quickly spinning up consistent environments. Today, he uses Docker to host services like Discourse, a private Git instance, and other services, while still rejecting the idea that Docker is a universal answer or should be used for all applications.