Docker tip for DevOps💡: discover how much disk space Docker takes up on your system.

Want to know how much disk space Docker takes up on your system?
In this short tutorial, I will show you how.

Use the command docker system df to see the Docker disk usage.

$ docker system df

On the output, you see the following:

• TYPE: type of docker resource (image, container, volume, etc.)
• TOTAL: total resources, active and inactive.
• ACTIVE: total active resources.
• SIZE: size of the resources.
• RECLAIMABLE: the space consumed by “unused” resources. In other words, it’s the total size of resources you can remove without breaking anything.
  This is what Docker will remove if you run docker system prune -a.

Another variation of the command is docker system df -v, it shows detailed information on space usage.

$ docker system df -v

You can also display the output in a custom template using — — format:

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