A systems administrator needs to investigate an issue in a Docker container that is failing to start correctly. The administrator wishes to view the output logs to diagnose the problem. Which command should the administrator run to display the last 50 lines of logs from the container named 'web-app'?
docker logs --tail 50 web-app
docker logs -f web-app | tail -50
docker inspect --format='{{.LogPath}}' web-app
docker container logs web-app --last 50