Files
moby/client
Sebastiaan van Stijn 04ab3d562c client: don't downgrade when failing to negotiate
Historically, the client would downgrade to API v1.24 when failing
to negotiate as this was the API version from before API-version
negotiation was introduced.

Given that those daemons are EOL and those API versions no longer
supported, we should not fall back to an older API version, and
just continue using the latest / current version.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2025-11-27 13:52:27 +01:00
..
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2025-11-12 17:53:36 +01:00
2025-11-27 12:05:27 +01:00
2025-11-12 17:53:36 +01:00
2025-11-12 17:53:36 +01:00
2025-11-12 17:53:36 +01:00
2025-11-12 17:53:36 +01:00

Go client for the Docker Engine API

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The docker command uses this package to communicate with the daemon. It can also be used by your own Go applications to do anything the command-line interface does; running containers, pulling or pushing images, etc.

For example, to list all containers (the equivalent of docker ps --all):

package main

import (
	"context"
	"fmt"

	"github.com/moby/moby/client"
)

func main() {
	// Create a new client that handles common environment variables
	// for configuration (DOCKER_HOST, DOCKER_API_VERSION), and does
	// API-version negotiation to allow downgrading the API version
	// when connecting with an older daemon version.
	apiClient, err := client.New(client.FromEnv)
	if err != nil {
		panic(err)
	}
	defer apiClient.Close()

	// List all containers (both stopped and running).
	result, err := apiClient.ContainerList(context.Background(), client.ContainerListOptions{
		All: true,
	})
	if err != nil {
		panic(err)
	}

	// Print each container's ID, status and the image it was created from.
	fmt.Printf("%s  %-22s  %s\n", "ID", "STATUS", "IMAGE")
	for _, ctr := range result.Items {
		fmt.Printf("%s  %-22s  %s\n", ctr.ID, ctr.Status, ctr.Image)
	}
}

Full documentation is available on pkg.go.dev.