Enter the container number (4 letters + 7 digits, e.g. MSKU1234567) or the bill of lading number on the shipping line's free tracker — Maersk, MSC, COSCO, CMA CGM all offer one without registration. Customs progress is separate: it lives in the FASAH declaration status, visible to whoever filed it.
The commercial gap is Discharged → Gate out: that is clearance, 1–3 working days with certificates ready.