docker

func AttachHost ¶

func AttachHost(dockerHost string) string

AttachHost derives the host portion of the attach URL from a Docker host URL.

tcp://1.2.3.4:2375       → 1.2.3.4
ssh://user@box.internal  → box.internal
unix:// / npipe:// / "" → 127.0.0.1

A wildcard (0.0.0.0, ::) collapses to 127.0.0.1 so the printed URL is actually dialable.

func EffectiveHost ¶

func EffectiveHost(configHost string) string

EffectiveHost reports the Docker host string that the client will actually use, applying the same precedence as NewClient.

func IsRemoteHost ¶

func IsRemoteHost(host string) bool

IsRemoteHost reports whether host refers to a remote Docker daemon (TCP, SSH, HTTP/HTTPS) rather than a local socket.

func NewClient ¶

func NewClient(host string) (*client.Client, error)

NewClient builds a Docker client.

Host resolution order:

1. host argument (from config docker.host or --docker-host flag)
2. DOCKER_HOST environment variable
3. active Docker CLI context (DOCKER_CONTEXT env or currentContext in ~/.docker/config.json)
4. SDK default (platform socket)