1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Copyright 2018 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"context"
"log"
"github.com/google/go-containerregistry/pkg/authn/k8schain"
"github.com/google/go-containerregistry/pkg/name"
"github.com/google/go-containerregistry/pkg/v1/remote"
)
func main() {
kc, err := k8schain.NewInCluster(context.Background(), k8schain.Options{})
if err != nil {
log.Fatalf("k8schain.New() = %v", err)
}
ref, err := name.ParseReference("ubuntu:latest")
if err != nil {
log.Fatalf("ParseReference() = %v", err)
}
img, err := remote.Image(ref, remote.WithAuthFromKeychain(kc))
if err != nil {
log.Fatalf("remote.Image() = %v", err)
}
digest, err := img.Digest()
if err != nil {
log.Fatalf("Digest() = %v", err)
}
log.Printf("got digest: %v", digest)
}
|
