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pull.go
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pull.go
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package images
import (
"encoding/base64"
"encoding/json"
"io"
"os"
"github.com/docker/docker/api/types"
"github.com/docker/docker/client"
"golang.org/x/net/context"
)
func Pull(dockerImage string) {
ctx := context.Background()
canonicalDockerImage, normErr := NormalizeImageName(dockerImage)
if normErr != nil {
panic(normErr)
}
cli, cliErr := client.NewEnvClient()
if cliErr != nil {
panic(cliErr)
}
out, pullErr := cli.ImagePull(ctx, canonicalDockerImage, types.ImagePullOptions{})
if pullErr != nil {
panic(pullErr)
}
defer out.Close()
_, outErr := io.Copy(os.Stdout, out)
if outErr != nil {
panic(outErr)
}
}
// TO BE TESTED
func PullWithAuth(dockerImage, username, password string) {
ctx := context.Background()
canonicalDockerImage, normErr := NormalizeImageName(dockerImage)
if normErr != nil {
panic(normErr)
}
cli, cliErr := client.NewEnvClient()
if cliErr != nil {
panic(cliErr)
}
authConfig := types.AuthConfig{
Username: username,
Password: password,
}
encodedJSON, jsonErr := json.Marshal(authConfig)
if jsonErr != nil {
panic(jsonErr)
}
authStr := base64.URLEncoding.EncodeToString(encodedJSON)
pullOpt := types.ImagePullOptions{RegistryAuth: authStr}
out, pullErr := cli.ImagePull(ctx, canonicalDockerImage, pullOpt)
if pullErr != nil {
panic(pullErr)
}
defer out.Close()
_, outErr := io.Copy(os.Stdout, out)
if outErr != nil {
panic(outErr)
}
}