Most frequently asked questions.

1. How much does Docker cost?

   Docker is 100% free, it is open source, so you can use it without paying.

2. What open source license are you using?

   We are using the Apache License Version 2.0, see it here: https://github.com/dotcloud/docker/blob/master/LICENSE

3. Does Docker run on Mac OS X or Windows?

   Not at this time, Docker currently only runs on Linux, but you can use VirtualBox to run Docker in a virtual machine on your box, and get the best of both worlds. Check out the MacOSX and Windows intallation guides.

4. How do containers compare to virtual machines?

   They are complementary. VMs are best used to allocate chunks of hardware resources. Containers operate at the process level, which makes them very lightweight and perfect as a unit of software delivery.

5. Can I help by adding some questions and answers?

   Definitely! You can fork the repo and edit the documentation sources.

42. Where can I find more answers?

    You can find more answers on:

    • IRC: docker on freenode
    • Github
    • Ask questions on Stackoverflow
    • Join the conversation on Twitter

Looking for something else to read? Checkout the Hello World example.