Summary - Registry

Combine login, search and pull to share images.

Summary: registry

In this group:

A registry stores images; the default is Docker Hub (docker.io/library/).
docker login authenticates; on CI the token is given with --password-stdin.
Official images are filtered with docker search and inspected with image inspect and scout.
Official images offer documented environment variables and conveniences like initdb.d.
Private registry: registry:2 or managed services; the name starts with the registry address.

echo "$TOKEN" | docker login ghcr.io -u ali --password-stdin
docker tag api:1.0 ghcr.io/ali/api:1.0
docker push ghcr.io/ali/api:1.0

Write three commands: log in to ghcr.io as ali from standard input with $GHCR_TOKEN; tag api:2.0.0 as ghcr.io/ali/api:2.0.0; push it.

Show example solution

echo "$GHCR_TOKEN" | docker login ghcr.io -u ali --password-stdin
docker tag api:2.0.0 ghcr.io/ali/api:2.0.0
docker push ghcr.io/ali/api:2.0.0

Log out of the registry.

docker ____ ghcr.io

Show answer

docker logout ghcr.io