tag.go

Documentation: github.com/google/go-containerregistry/pkg/crane

     1  // Copyright 2019 Google LLC All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //    http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package crane
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"github.com/google/go-containerregistry/pkg/name"
    21  	"github.com/google/go-containerregistry/pkg/v1/remote"
    22  )
    23  
    24  // Tag adds tag to the remote img.
    25  func Tag(img, tag string, opt ...Option) error {
    26  	o := makeOptions(opt...)
    27  	ref, err := name.ParseReference(img, o.Name...)
    28  	if err != nil {
    29  		return fmt.Errorf("parsing reference %q: %w", img, err)
    30  	}
    31  	desc, err := remote.Get(ref, o.Remote...)
    32  	if err != nil {
    33  		return fmt.Errorf("fetching %q: %w", img, err)
    34  	}
    35  
    36  	dst := ref.Context().Tag(tag)
    37  
    38  	return remote.Tag(dst, desc, o.Remote...)
    39  }
    40
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