Copying images without pulling it using containers/image module in go without need docker

main.go

package main

import (
	"context"
	"fmt"
	"github.com/containers/image/copy"
	"github.com/containers/image/docker"
	"github.com/containers/image/manifest"
	"github.com/containers/image/signature"
	"github.com/containers/image/types"
	"os"
)

func main() {

	todo := context.TODO()

	sourceImageRef, err := docker.ParseReference("//hello-world")

	if err != nil {
		panic(err)
	}

  dockerID := os.GetEnv("DOCKER_ID")
	destImageRef, err := docker.ParseReference("//" + dockerID + "/hello-world")

	if err != nil {
		panic(err)
	}

	reqs := []signature.PolicyRequirement{signature.NewPRInsecureAcceptAnything()}

	pc, err := signature.NewPolicyContext(&signature.Policy{Default: reqs})

	if err != nil {
		panic(err)
	}

	m, err := copy.Image(todo, pc, destImageRef, sourceImageRef,
		&copy.Options{
			SourceCtx: &types.SystemContext{OSChoice: "linux", ArchitectureChoice: "amd64"},
			DestinationCtx: &types.SystemContext{OSChoice: "linux", ArchitectureChoice: "amd64",
				DockerAuthConfig: &types.DockerAuthConfig{Username: os.Getenv("DOCKER_USERNAME"), Password: os.Getenv("DOCKER_PASSWORD")}}},
	)

	digest, err := manifest.Digest(m)

	if err != nil {
		panic(err)
	}

	fmt.Printf("Copied digest: %s", digest.String())
}