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Docker — Questions

Open Questions

  • What is the production readiness status of Docker's Wasm runtime support (containerd-shim-wasmedge)?
  • How does the experimental nftables support compare to iptables in Docker v29 for performance?
  • What is Docker Scout's detection rate vs Trivy/Grype for CVE scanning accuracy?

Answered Questions

  • Is Docker free for enterprises? → Engine (Moby) is Apache 2.0 free. Docker Desktop requires a paid subscription for companies with >250 employees or >$10M revenue. See infrastructure/docker/index#Pricing.
  • What replaced Docker Swarm? → Kubernetes. Swarm mode is still in the engine but no longer actively developed.
  • Does Docker support rootless mode? → Yes, since Docker Engine 20.10+. Run without root privileges.
  • What is containerd vs Docker? → containerd is the low-level container runtime embedded in Docker. Docker adds image building, CLI, networking, volumes on top. See infrastructure/docker/how-it-works.