Overview
Docker allows developers to bundle an application with all its dependencies (libraries, configuration files) into a single container. This ensures the app runs the same way on any machine.
Key Concepts
- Image: A read-only template used to create containers.
- Container: A running instance of an image.
- Dockerfile: A script containing instructions to build a Docker image.
Why Docker?
- Portability: 'Build once, run anywhere.'
- Isolation: Containers don't interfere with each other.
- Efficiency: Uses fewer resources than traditional Virtual Machines (VMs).