Golang如何实现自动化镜像构建与推送

package main

import (
    "fmt"
    "log"
    "os/exec"
)

func buildImage(imageName, dockerfilePath string) error {
    cmd := exec.Command("docker", "build", "-t", imageName, "-f", dockerfilePath, ".")
    output, err := cmd.CombinedOutput()
    if err != nil {
        return fmt.Errorf("build failed: %v, output: %s", err, output)
    }
    log.Printf("Build success: %s", output)
    return nil
}

func pushImage(imageName string) error {
    cmd := exec.Command("docker", "push", imageName)
    output, err := cmd.CombinedOutput()
    if err != nil {
        return fmt.Errorf("push failed: %v, output: %s", err, output)
    }
    log.Printf("Push success: %s", output)
    return nil
}

func main() {
    image := "your-registry.com/your-app:v1.0"
    if err := buildImage(image, "./Dockerfile"); err != nil {
        log.Fatal(err)
    }
    if err := pushImage(image); err != nil {
        log.Fatal(err)
    }
}

go get github.com/docker/docker/client

package main

import (
    "context"
    "io"
    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func buildWithSDK(dockerfile, imageName string) error {
    ctx := context.Background()
    cli, err := client.NewClientWithOpts(client.FromEnv)
    if err != nil {
        return err
    }
    cli.NegotiateAPIVersion(ctx)

    tar, err := archive.TarWithOptions(".", &archive.TarOptions{})
    if err != nil {
        return err
    }

    resp, err := cli.ImageBuild(ctx, tar, types.ImageBuildOptions{
        Dockerfile: dockerfile,
        Tags:       []string(imageName),
        Remove:     true,
    })
    if err != nil {
        return err
    }
    defer resp.Body.Close()

    io.Copy(os.Stdout, resp.Body)
    return nil
}

authConfig := types.AuthConfig{
    Username: "your-user",
    Password: "your-token-or-password",
}
encodedJSON, _ := json.Marshal(authConfig)
authStr := base64.URLEncoding.EncodeToString(encodedJSON)

resp, err := cli.ImagePush(ctx, imageName, types.ImagePushOptions{
    RegistryAuth: authStr,
})

tag := os.Getenv("GIT_TAG")
if tag == "" {
    tag = "latest"
}
imageName := fmt.Sprintf("myreg.com/app:%s", tag)