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What is Docker?

What is the difference between Docker image and Docker container?

How is a Docker container different from a hypervisor?

Can we write compose file in json file instead of yaml?

Can we run multiple apps on one server with Docker?

What are the main features of Docker-compose?

What is the most popular use of Docker?

What is the role of open source development in the popularity of Docker?

What is the difference between Docker commands: up, run and start?

What is Docker Swarm?