verifyStep property

@override CommandStep get verifyStep

The verify probe (e.g. docker --version).

Implementation

@override
CommandStep get verifyStep => const CommandStep('sh', [
  '-c',
  'command -v netstat >/dev/null 2>&1 && command -v route >/dev/null 2>&1 '
      '|| exit 1\n'
      // net-tools answers `--version` on Linux; macOS's netstat does not, and
      // the probe must not fail over a version it cannot have.
      'netstat --version 2>/dev/null | head -1 || true',
]);