M Mr. Dubey 🎓 Coach ⭐ 102.92K Points 📊 Docker Q. Which instruction should be placed at the beginning of a Dockerfile? (A) CMD (B) RUN (C) COPY (D) FROM 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (D) FROM Explanation: `FROM` must be the first instruction in any valid Dockerfile.