docker

Dev environment standardization ("works on my machine" solved), CI/CD pipelines, reproducible builds, microservices deployment, and self-hosted infrastructure. docker-compose is universally praised for simplicity. VSCode Dev Containers praised as a workflow improvement.

"Works on this machine with an executable recipe" — Docker has had more impact on software infrastructure than most tools. The core container runtime is beloved; Docker Desktop licensing and Docker Hub rate limits are the two growing frustrations driving users to Podman/Colima alternatives.

Security-sensitive isolation — Docker is not a security boundary (shared kernel, documented container escapes). Docker Desktop on Mac has resource usage and networking complaints. Docker Hub rate limiting is driving paid users to alternatives like GHCR.