How do you explain Docker?

Related questions

1. What is namespace standard?
2. Why do we need containers?
3. What is Cgroups and namespaces?
4. What is SOAP namespace?
5. How does Linux work?
6. What is a container in OS?
7. What is process namespace?
8. Can a namespace have attributes?
9. What is namespace in Hadoop?
10. What is the difference between OpenShift and Docker?

Tags

1. #applications
2. #designed
3. #using
4. #developer
5. #containers
6. #dependencies
7. #allow
8. #package
9. #needs
10. #libraries
11. #parts
12. #create
13. #deploy
14. #easier
15. #application
16. #docker
17. #other