45f593449a
have a look at the README.md to see how it works. Bootstrap a CLI program to copy binaries from multi arch images Signed-off-by: Gianluca Arbezzano <gianarb92@gmail.com>
77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
package docker
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import (
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"context"
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"github.com/containers/image/v5/copy"
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"github.com/containers/image/v5/manifest"
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"github.com/containers/image/v5/signature"
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"github.com/containers/image/v5/transports/alltransports"
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"github.com/containers/image/v5/types"
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)
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type Image struct {
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src types.ImageSource
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ref types.ImageReference
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sys *types.SystemContext
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}
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func ImageFromName(ctx context.Context, sys *types.SystemContext, name string) (*Image, error) {
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imageRef, err := alltransports.ParseImageName(name)
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if err != nil {
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return nil, err
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}
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src, err := imageRef.NewImageSource(ctx, sys)
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if err != nil {
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return nil, err
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}
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return &Image{
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src: src,
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ref: imageRef,
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sys: sys,
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}, nil
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}
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func (img *Image) GetManifest(ctx context.Context) ([]byte, string, error) {
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rawManifest, _, err := img.src.GetManifest(ctx, nil)
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if err != nil {
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return nil, "", err
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}
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return rawManifest, manifest.GuessMIMEType(rawManifest), nil
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}
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func (img *Image) Copy(ctx context.Context, dst string) error {
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destRef, err := alltransports.ParseImageName(dst)
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if err != nil {
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return err
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}
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pc, err := signature.NewPolicyContext(&signature.Policy{
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Default: []signature.PolicyRequirement{
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signature.NewPRInsecureAcceptAnything(),
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},
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})
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if err != nil {
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return err
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}
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_, err = copy.Image(ctx, pc, destRef, img.ref, ©.Options{SourceCtx: img.sys})
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if err != nil {
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return err
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}
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return nil
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}
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type SchemaV2List struct {
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MediaType string `json:"mediaType"`
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SchemaVersion int `json:"schemaVersion"`
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Manifests []struct {
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MediaType string `json:"mediaType"`
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Digest string `json:"digest"`
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Size int `json:"size"`
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Platform struct {
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Architecture string `json:"architecture"`
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Os string `json:"os"`
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Variant string `json:"variant"`
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} `json:"platform,omitempty"`
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} `json:"manifests"`
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}
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