Docker

Docker brand colours

Extracted from the artwork and ranked by how much of the mark each covers — not from a brand book, so treat them as observed rather than official.

Docker packages an application and its dependencies into an image that runs the same way on a laptop, in CI, and in production. The company did not invent Linux containers — cgroups and namespaces predate it by years — but it turned them into a developer-facing format, and the OCI image spec that came out of that work is now the unit of deployment for most of the industry. Docker Desktop is the paid piece for larger companies; the engine, the CLI and Compose are what most people actually touch daily. Its competition depends on which part you mean: Podman and containerd at the runtime layer, Buildah, Kaniko and BuildKit at the build layer, and Nix or Bazel for teams who want reproducibility guarantees that images alone do not give. On toolweight, Docker shows up indirectly everywhere: custom-image support is one of the fields that separates sandbox providers, and container support is what most deployment platforms are ultimately selling.