7. Debugging containers

docker logs --tail 100 api
docker inspect api                       # config, env, mounts, IP, health status
docker exec -it api sh                   # look around (not available in chiseled images)
docker stats                             # live CPU/memory
docker top api                           # processes
docker events                            # daemon events (OOM kills, restarts)
docker run --rm -it --entrypoint sh shop-api:1.0      # override entrypoint to inspect an image
docker cp api:/app/appsettings.json .                 # copy files out
docker history shop-api:1.0                           # layers and sizes