Docker registry ni mfumo wa uhifadhi na usambazaji wa Docker images — unai-push (sukuma) images kwake na kuzi-pull (vuta) kutoka kwake. Docker Hub ni registry chaguo-msingi ya umma; mashirika mara nyingi hutumia private registries. Registries ndizo jinsi images zinavyoshirikiwa na kusambazwa.
Registry inafanya nini
A REGISTRY stores and distributes Docker images:
→ PUSH an image to the registry (upload/publish it)
→ PULL an image from the registry (download it to run)
→ This is how images move between machines: build once, push, pull anywhere
(CI builds an image → pushes to a registry → production pulls and runs it)
