It's currently slower because it calls registry.ParseRepositoryInfo,
which does a DNS lookup for hostnames to determine if they're a loopback
address (and marked "insecure");
go test -v -run TestRetrieveAuthTokenFromImage
=== RUN TestRetrieveAuthTokenFromImage
=== RUN TestRetrieveAuthTokenFromImage/no-prefix
=== RUN TestRetrieveAuthTokenFromImage/docker.io
=== RUN TestRetrieveAuthTokenFromImage/index.docker.io
=== RUN TestRetrieveAuthTokenFromImage/registry-1.docker.io
=== RUN TestRetrieveAuthTokenFromImage/registry.hub.docker.com
=== RUN TestRetrieveAuthTokenFromImage/[::1]
=== RUN TestRetrieveAuthTokenFromImage/[::1]:5000
=== RUN TestRetrieveAuthTokenFromImage/127.0.0.1
=== RUN TestRetrieveAuthTokenFromImage/localhost
=== RUN TestRetrieveAuthTokenFromImage/localhost:5000
=== RUN TestRetrieveAuthTokenFromImage/no-auth.example.com
--- PASS: TestRetrieveAuthTokenFromImage (0.35s)
--- PASS: TestRetrieveAuthTokenFromImage/no-prefix (0.00s)
--- PASS: TestRetrieveAuthTokenFromImage/docker.io (0.00s)
--- PASS: TestRetrieveAuthTokenFromImage/index.docker.io (0.00s)
--- PASS: TestRetrieveAuthTokenFromImage/registry-1.docker.io (0.08s)
--- PASS: TestRetrieveAuthTokenFromImage/registry.hub.docker.com (0.12s)
--- PASS: TestRetrieveAuthTokenFromImage/[::1] (0.13s)
--- PASS: TestRetrieveAuthTokenFromImage/[::1]:5000 (0.00s)
--- PASS: TestRetrieveAuthTokenFromImage/127.0.0.1 (0.00s)
--- PASS: TestRetrieveAuthTokenFromImage/localhost (0.00s)
--- PASS: TestRetrieveAuthTokenFromImage/localhost:5000 (0.00s)
--- PASS: TestRetrieveAuthTokenFromImage/no-auth.example.com (0.01s)
PASS
ok github.com/docker/cli/cli/command 1.367s
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
15b95beac7