Lesson 4 / 26

Pulling an Image

Fetch a published image from a registry before running it.

docker pull

docker pull downloads an image from a registry (Docker Hub by default) to your local machine, without running it.

docker pull nginx:latest
docker images   # list local images

Always pin a tag

nginx without a tag means nginx:latest, which changes over time. Pin a version like nginx:1.27 for reproducible builds.