🥇 Puleaina o pusa Docker i Go

Fa'amaumauga!

A e filifili e tusi lau lava uila mo le puʻeina o matau mai le docker hub pe mai le resitala e otometi ona faʻafouina / taʻavale pusa i luga o le 'auʻaunaga, e mafai ona e mauaina le Docker Cli aoga, lea o le a fesoasoani e pulea le Docker daemon i lau masini.

Ina ia galue e te manaʻomia le Go version e le itiiti ifo i le 1.9.4

Afai e te leʻi suia i modules, faʻapipiʻi Cli ma le faʻatonuga lea:

go get github.com/docker/docker/client

Ta'avale se koneteina

O le faʻataʻitaʻiga lea e faʻaalia ai le faʻaogaina o se atigipusa e faʻaaoga ai le Docker API. I luga o le laina faʻatonu e te faʻaaogaina le poloaiga docker run, ae e faigofie ona tatou taulimaina lenei galuega i la tatou auaunaga.
O lenei faʻataʻitaʻiga e tutusa ma le faʻatinoina o le poloaiga docker run alpine echo hello world

package main {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Делаем docker pull
    reader, err := cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{})
    if err != nil {
        panic(err)
    }
    io.Copy(os.Stdout, reader)

    hostBinding := nat.PortBinding{
        HostIP:   "0.0.0.0",
        HostPort: "8000",
    }
    containerPort, err := nat.NewPort("tcp", "80")
    if err != nil {
        panic("Unable to get the port")
    }
    portBinding := nat.PortMap{containerPort: []nat.PortBinding{hostBinding}}

    // Создаем контейнер с заданной конфигурацией
    resp, err := cli.ContainerCreate(ctx, &container.Config{
        Image: "alpine",
        Cmd:   []string{"echo", "hello world"},
        Tty:   true,
    }, &container.HostConfig{
        PortBindings: portBinding,
    }, nil, "")
    if err != nil {
        panic(err)
    }

    // Запускаем контейнер
    if err := cli.ContainerStart(ctx, resp.ID, types.ContainerStartOptions{}); err != nil {
        panic(err)
    }

    // Получаем логи контейнера
    out, err := cli.ContainerLogs(ctx, resp.ID, types.ContainerLogsOptions{ShowStdout: true})
    if err != nil {
        panic(err)
    }
    io.Copy(os.Stdout, out)
}

Mauaina o se lisi o koneteina tamo'e

O lenei faʻataʻitaʻiga e tutusa ma le faʻatinoina o le poloaiga docker ps

package main

import (
    "context"
    "fmt"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Получение списка запуцщенных контейнеров(docker ps)
    containers, err := cli.ContainerList(context.Background(), types.ContainerListOptions{})
    if err != nil {
        panic(err)
    }

    // Вывод всех идентификаторов контейнеров
    for _, container := range containers {
        fmt.Println(container.ID)
    }
}

Taofi uma koneteina tamo'e

O le taimi lava e te aʻoaʻoina ai pe faʻafefea ona fai ma taʻavale pusa, ua oʻo i le taimi e aʻoaʻo ai pe faʻafefea ona pulea. O le fa'ata'ita'iga o lo'o mulimuli mai o le a taofia uma ai koneteina ta'avale.

Aua e te faʻaogaina lenei code i luga o se 'auʻaunaga gaosiga!

package main

import (
    "context"
    "fmt"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Получение списка запуцщенных контейнеров(docker ps)
    containers, err := cli.ContainerList(ctx, types.ContainerListOptions{})
    if err != nil {
        panic(err)
    }

    for _, c := range containers {
        fmt.Print("Stopping container ", c.ID[:10], "... ")
        if err := cli.ContainerStop(ctx, c.ID, nil); err != nil {
            panic(err)
        }
        fmt.Println("Success")
    }
}

Fa'aali ogalaau mo se koneteina e tasi

E mafai ona e galue i pusa ta'itasi. O le fa'ata'ita'iga o lo'o i lalo o lo'o fa'aalia ai ogalaau o koneteina ma le fa'ailoga fa'apitoa. Aʻo leʻi amataina, e tatau ona e suia le ID o le koneteina ona ogalaau e te manaʻo e maua.

package main

import (
    "context"
    "io"
    "os"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    options := types.ContainerLogsOptions{ShowStdout: true}
    // Измените id контейнера здесь
    out, err := cli.ContainerLogs(ctx, "f1064a8a4c82", options)
    if err != nil {
        panic(err)
    }
    io.Copy(os.Stdout, out)
}

Maua se lisi o ata

O lenei faʻataʻitaʻiga e tutusa ma le faʻatinoina o le poloaiga docker image ls

package main

import (
    "context"
    "fmt"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Получение списка образов
    images, err := cli.ImageList(context.Background(), types.ImageListOptions{})
    if err != nil {
        panic(err)
    }

    for _, image := range images {
        fmt.Println(image.ID)
    }
}

toso

O lenei faʻataʻitaʻiga e tutusa ma le faʻatinoina o le poloaiga docker pull

package main

import (
    "context"
    "io"
    "os"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // docker pull alpine
    out, err := cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{})
    if err != nil {
        panic(err)
    }
    defer out.Close()
    io.Copy(os.Stdout, out)
}

La'uina o se ata ma le fa'amaoniga a le tagata fa'aoga

O lenei faʻataʻitaʻiga e tutusa ma le faʻatinoina o le poloaiga docker pull, ma le fa'amaoni.

O fa'amaumauga fa'amaonia e lafo i tusitusiga manino. E faʻaaoga e le ofisa faʻamaufaʻailoga aloaia HTTPS,
resitara tumaoti e tatau foi ona configured e fesiitai faamatalaga faaaogaina HTTPS.

package main

import (
    "context"
    "encoding/base64"
    "encoding/json"
    "io"
    "os"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Создание конфига с данными для аутентификации
    authConfig := types.AuthConfig{
        Username: "username",
        Password: "password",
    }
    encodedJSON, err := json.Marshal(authConfig)
    if err != nil {
        panic(err)
    }
    authStr := base64.URLEncoding.EncodeToString(encodedJSON)

    out, err := cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{RegistryAuth: authStr})
    if err != nil {
        panic(err)
    }

    defer out.Close()
    io.Copy(os.Stdout, out)
}

puna: www.habr.com

Puleaina o pusa Docker i Go