Quick Answer
What is Docker?
Docker is a platform that packages applications and their dependencies into lightweight, portable containers.
Software Development
Docker
By Glintr Editorial TeamReviewed by Glintr Learn ReviewersUpdated 5 min readArea: Software Development
Definition
Docker lets developers bundle code, runtime, libraries, and configuration into a single container image that runs consistently across laptops, servers, and clouds. It has become a standard building block of modern software delivery pipelines.
Applications
- Microservices deployment
- Reproducible development environments
- CI/CD pipelines
- Local testing of production stacks
Advantages
- Portable across environments
- Faster than virtual machines
- Simplifies dependency management
Limitations
- Not a full security boundary by itself
- Requires orchestration at scale (see Kubernetes)
Related Concepts
- KubernetesKubernetes is an open-source system for automating deployment, scaling, and management of containerized applications.
- Cloud ComputingCloud Computing is the on-demand delivery of compute, storage and services over the internet.
- Software DevelopmentSoftware Development is the practice of designing, building, testing and maintaining computer programs.