docker/cli · error

invalid value for %s: %s

Error message

invalid value for %s: %s

What it means

Error "invalid value for %s: %s" thrown in docker/cli.

Source

Thrown at opts/mount.go:130

		case "volume-nocopy":
			ensureVolumeOptions(&mount).NoCopy, err = parseBoolValue(key, val, hasValue)
			if err != nil {
				return err
			}
		case "volume-label":
			volumeOpts := ensureVolumeOptions(&mount)
			volumeOpts.Labels = setValueOnMap(volumeOpts.Labels, val)
		case "volume-driver":
			ensureVolumeDriver(&mount).Name = val
		case "volume-opt":
			volumeDriver := ensureVolumeDriver(&mount)
			volumeDriver.Options = setValueOnMap(volumeDriver.Options, val)
		case "image-subpath":
			ensureImageOptions(&mount).Subpath = val
		case "tmpfs-size":
			sizeBytes, err := units.RAMInBytes(val)
			if err != nil {
				return fmt.Errorf("invalid value for %s: %s", key, val)
			}
			ensureTmpfsOptions(&mount).SizeBytes = sizeBytes
		case "tmpfs-mode":
			ui64, err := strconv.ParseUint(val, 8, 32)
			if err != nil {
				return fmt.Errorf("invalid value for %s: %s", key, val)
			}
			ensureTmpfsOptions(&mount).Mode = os.FileMode(ui64)
		default:
			return fmt.Errorf("unknown option '%s' in '%s'", key, field)
		}
	}

	if err := validateMountOptions(&mount); err != nil {
		return err
	}

	m.values = append(m.values, mount)

View on GitHub (pinned to e9452d6e78)

When it happens

Trigger: Thrown at opts/mount.go:130 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of docker/cli@e9452d6e78 (2026-08-01). Data as JSON: /data/errors/db14fb31b99701b1.json. Report an issue: GitHub.