70 lines
2.2 KiB
Go
70 lines
2.2 KiB
Go
/*
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Copyright 2021 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"bytes"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"github.com/spf13/afero"
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)
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// DockerConfLocation returns the file system location of the Docker
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// configuration file under the directory set in the DOCKER_CONFIG environment
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// variable. If that variable is not set, it returns the OS-equivalent of
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// "/kaniko/.docker/config.json".
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func DockerConfLocation() string {
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configFile := "config.json"
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if dockerConfig := os.Getenv("DOCKER_CONFIG"); dockerConfig != "" {
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file, err := os.Stat(dockerConfig)
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if err == nil {
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if file.IsDir() {
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return filepath.Join(dockerConfig, configFile)
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}
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} else {
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if os.IsNotExist(err) {
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return string(os.PathSeparator) + filepath.Join("kaniko", ".docker", configFile)
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}
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}
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return filepath.Clean(dockerConfig)
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}
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return string(os.PathSeparator) + filepath.Join("kaniko", ".docker", configFile)
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}
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func ConfigureGCR(flags string) error {
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// Checking for existence of docker.config as it's normally required for
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// authenticated registries and prevent overwriting user provided docker conf
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_, err := afero.NewOsFs().Stat(DockerConfLocation())
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dockerConfNotExists := os.IsNotExist(err)
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if dockerConfNotExists {
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cmd := exec.Command("docker-credential-gcr", "configure-docker", flags)
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var out bytes.Buffer
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cmd.Stderr = &out
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if err := cmd.Run(); err != nil {
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return errors.Wrap(err, fmt.Sprintf("error while configuring docker-credential-gcr helper: %s : %s", cmd.String(), out.String()))
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}
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} else {
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logrus.Warnf("\nSkip running docker-credential-gcr as user provided docker configuration exists at %s", DockerConfLocation())
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}
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return nil
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}
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