🛳 What is docker?
Docker is a containerization platform from Docker, Inc that enables the development, deployment, and running of applications in isolated containers. Containers encapsulate an application and its dependencies, ensuring consistency across different environments.
📚 Key Concepts:
🌟 Containers:
- Lightweight, standalone, and executable packages.
- Include the application code, runtime, libraries, and system tools.
- Run consistently on any environment with Docker installed.
🌟 Images:
- Template for creating containers.
- Snapshot of a filesystem with application code and dependencies.
- Stored in a registry (like Docker Hub) and can be shared.
🌟 Dockerfile:
- Script containing instructions to build a Docker image.
- Specifies the base image, application code, dependencies, and configurations.
🌟 Registry:
- Repository for Docker images.
- Docker Hub is a public registry; private registries are also available.
🌟 Container Orchestration:
- Docker Compose: Defines multi-container applications and manages their lifecycle.
- Kubernetes: Orchestrates and automates the deployment, scaling, and management of containers.
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