Wireguard as client stack

Self solve documented.
Under wireguard service
healthcheck:
test: [“CMD”, “curl”, “-f”, “https://ifconfig.me”]
interval: 30s
timeout: 10s
retries: 3
start_period: 30s

Under dependent containter.

healthcheck:
  test: ["CMD", "curl", "-f", "https://ifconfig.me"]
  interval: 30s
  timeout: 10s
  retries: 3
  start_period: 30s