Build Docker Image From Go Code

Question

I\'m trying to build a Docker image using the Docker API and Docker Go libraries (https://github.com/docker/engine-api/). Code example:

package main
import (         


        

Answer 1

Combining a few of the answers, and adding how to correctly parse the returned JSON using DisplayJSONMessagesToStream.

package main

import (
    "os"
    "log"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/pkg/archive"
    "github.com/docker/docker/pkg/jsonmessage"
    "github.com/docker/docker/pkg/term"
    "golang.org/x/net/context"
)

// Build a dockerfile if it exists
func Build(dockerFilePath, buildContextPath string, tags []string) {

    ctx := context.Background()
    cli := getCLI()

    buildOpts := types.ImageBuildOptions{
        Dockerfile: dockerFilePath,
        Tags:       tags,
    }

    buildCtx, _ := archive.TarWithOptions(buildContextPath, &archive.TarOptions{})

    resp, err := cli.ImageBuild(ctx, buildCtx, buildOpts)
    if err != nil {
        log.Fatalf("build error - %s", err)
    }
    defer resp.Body.Close()

    termFd, isTerm := term.GetFdInfo(os.Stderr)
    jsonmessage.DisplayJSONMessagesStream(resp.Body, os.Stderr, termFd, isTerm, nil)
}

I've left our a few convenience functions like getCLI but I'm sure you have your own equivalents.