Show traefik start failure details in output

[b1rdex]

Ensure Traefik is running...
  INFO [084e5136] Running docker login cr.yandex -u [REDACTED] -p [REDACTED] on x.x.x.x
  INFO [084e5136] Finished in 0.566 seconds with exit status 0 (successful).
  INFO [3bf0de32] Running docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size="10m" traefik:v2.9 --providers.docker --log.level="DEBUG" on x.x.x.
  INFO [3bf0de32] Finished in 0.727 seconds with exit status 126 (failed).
Ensure app can pass healthcheck...
<skipped>

For me, the reason was docker rootless mode – can't bind on port <1024 (docker shows a pretty error with explanation on how to fix). But to get the details, I had to ssh and redo the command myself.