T-shirts.

T-shirts about putting applications in containers whether they need it or not. For DevOps engineers who've Dockerized systems that ran fine as regular processes. Designs about the promise of "it works on my machine" solved through containerization, until the Docker daemon crashes. Works when you're writing Dockerfiles, debugging why the container won't start, or explaining that containers aren't virtual machines. Made for developers who know Docker simplified some problems and created new ones.