Do I need Docker installed on my computer?

No! You'll practice in our cloud-based Docker environment directly in your browser. No installation or setup required.

Each step includes hints and detailed instructions. You can retry as many times as needed, and your progress is automatically saved.

Is this scenario free?

Yes! This scenario is completely free. Create an account to start learning.

Is this content up-to-date?

Yes! All scenarios are regularly updated to match the latest Docker versions and best practices.

Scenarios/Docker Fundamentals for Beginners

PracticalBeginnerFree

20 min

No setup required

Dockerfile: Create Your First Custom Image

Go from Docker consumer to Docker creator! Learn to write Dockerfiles using essential instructions (FROM, RUN, COPY, CMD), build your first custom image, and understand image tagging. The perfect foundation for containerizing any application!

Start This Scenario

Type

Practical (Terminal)

Difficulty

Beginner

Duration

20 min

Interactive Learning Experience

Practice in a real Docker environment directly in your browser

Terminal

root@instance01:/# docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

root@instance01:/# docker swarm init

Swarm initialized: current node is now a manager.

root@instance01:/# docker node ls

ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS

abc123 * instance01 Ready Active Leader

root@instance01:/# _

Real terminal with Docker pre-installed

Step-by-step guided instructions

Automatic validation of your progress

No installation or setup required

Unlock Requirements

Complete these scenarios first to unlock this one:

Images vs Containers: Understanding the Difference

Prerequisite

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