Docker CMD vs ENTRYPOINT – Explained Simply for Beginners

Understanding the difference between CMD and ENTRYPOINT is one of the most confusing parts of learning Docker — especially for beginners.

In this video, I explain CMD vs ENTRYPOINT in the simplest possible way using real Dockerfile examples and clear explanations.

📌 What you’ll learn in this video:

What CMD does in a Dockerfile

What ENTRYPOINT does and how it behaves

How Docker decides what command runs when a container starts

Why CMD is flexible and ENTRYPOINT is fixed

The best practice for using CMD and ENTRYPOINT together

Why JSON format is recommended in Dockerfiles

This video is perfect if you are:
✔ Learning Docker from scratch
✔ Starting your DevOps journey
✔ Confused about Dockerfile instructions
✔ Working with containers for the first time

By the end of this video, CMD vs ENTRYPOINT will finally make sense.

📦 Dockerfile examples used:

CMD ["python", "app.py"]

ENTRYPOINT ["python"]

ENTRYPOINT + CMD best practice

If you want more beginner-friendly DevOps and Docker explanations, follow for upcoming videos.

Видео Docker CMD vs ENTRYPOINT – Explained Simply for Beginners канала Rishabh Mishra DevOps