What Docker Actually Solves¶
Docker makes building images, distributing content, creating isolated processes, networking, storage, logging, and lifecycle management convenient.
| Docker action | Underlying idea |
|---|---|
docker run |
image + filesystem + process + isolation + network/resource settings |
docker ps |
managed process lifecycle visibility |
docker exec |
additional process in existing namespaces |
docker logs |
captured stdout/stderr |
docker build |
repeatable image construction |
Docker does not make state disappear, secure secrets automatically, or design an application's network architecture. It makes the underlying Linux mechanisms practical to use consistently.