What this snippet does
start-period gives a slow-starting app time to boot before failures count against it.
Expected output
STATUS: Up 45 seconds (healthy)
Why practise typing this
Typing healthcheck & signals code builds muscle memory for the symbols and indentation Docker uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Docker practice
- HTTP health probeHealthcheck & Signals · intermediate
- Probe tool not installedHealthcheck & Signals · intermediate
- Custom stop signalHealthcheck & Signals · advanced
- Extending the grace periodHealthcheck & Signals · intermediate
- PID 1 ignores SIGTERMHealthcheck & Signals · advanced
- Restart policyHealthcheck & Signals · intermediate