docker inspect CONTAINER_NAME | jq .[0].State.Health.Log | jq .[-1]
Example:
docker inspect piaware | jq .[0].State.Health.Log | jq .[-1]
Output:
{
"Start": "2020-11-17T17:57:01.882432306+08:00",
"End": "2020-11-17T17:57:02.22676943+08:00",
"ExitCode": 1,
"Output": "Connected to Flightaware, OK.\n0 dump1090 messages sent in past hour, NOT OK.\nWebserver listening on port 80, OK.\nWebserver listening on port 8080, OK.\n"
}