CopyStringStringMap deep copies a map[string]string and returns the result.

GetCopyOptions constructs a new containers/image/copy.Options{} struct from the given parameters.

GetPolicyContext creates a signature policy context for the given signature policy path.

GetSystemContext Constructs a new containers/image/types.SystemContext{} struct from the given signaturePolicy path.

IsFalse determines whether the given string equals "false".

IsTrue determines whether the given string equals "true".

IsValidBool determines whether the given string equals "true" or "false".

ParseRegistryCreds takes a credentials string in the form USERNAME:PASSWORD and returns a DockerAuthConfig.

ErrNoPassword is returned if the user did not supply a password.

DockerRegistryOptions encapsulates settings that affect how we connect or authenticate to a remote registry.

SigningOptions encapsulates settings that control whether or not we strip or add signatures to images when writing them.