// Find a best match for docker authentication
// Docker's config is a bunch of special-cases, try to cover most of them here.
// TODO: This may not work at all when we switch to a private V2 registry
func findAuth(registry string) docker.AuthConfiguration {
// Ignore the error. If .dockercfg doesn't exist, maybe we don't need auth
auths, _ := docker.NewAuthConfigurationsFromDockerCfg()
if auths == nil || auths.Configs == nil {
return docker.AuthConfiguration{}
}
auth, ok := auths.Configs[registry]
if ok {
return auth
}
// no exact match, so let's try harder
// Docker only uses the hostname for private indexes
for reg, auth := range auths.Configs {
// extract the hostname if the key is a url
if u, e := url.Parse(reg); e == nil && u.Host != "" {
reg = u.Host
}
if registry == reg {
return auth
}
}
// Still no match
// Try the default docker index server
return auths.Configs[defaultIndexServer]
}
// NewExecuteContext craetes a new empty ExecuteContext
func NewExecuteContext(
config *config.Config,
client client.DockerClient,
execEnv *execenv.ExecEnv,
quiet bool,
) *ExecuteContext {
authConfigs, err := docker.NewAuthConfigurationsFromDockerCfg()
if err != nil {
logging.Log.Warnf("Failed to load auth config: %s", err)
}
return &ExecuteContext{
modified: make(map[task.Name]bool),
Resources: newResourceCollection(),
WorkingDir: config.WorkingDir,
Client: client,
authConfigs: authConfigs,
Env: execEnv,
Quiet: quiet,
}
}