CV-S006: Invalid Duration Format

Healthcheck fields (interval, timeout, start_period, start_interval) and stop_grace_period accept Docker duration format: a sequence of decimal numbers with unit suffixes such as "us" (microseconds), "ms" (milliseconds), "s" (seconds), "m" (minutes), "h" (hours). Examples: "30s", "5m", "1h30m", "2h30m15s". ISO 8601 durations (e.g., "PT30S") are also accepted. A common mistake is using a bare integer without a unit suffix (e.g., 30 instead of "30s"), or adding a space between the number and unit (e.g., "30 s" instead of "30s").