What this snippet does
Shell-form CMD makes /bin/sh PID 1, and sh does not forward SIGTERM to its child.
Expected output
container killed after 10s grace period
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
- Start period for slow bootsHealthcheck & Signals · advanced
- Probe tool not installedHealthcheck & Signals · intermediate
- Custom stop signalHealthcheck & Signals · advanced
- Extending the grace periodHealthcheck & Signals · intermediate
- Restart policyHealthcheck & Signals · intermediate