Understand the fundamental concepts of Docker.
Docker uses images, containers, volumes, and networks to isolate and manage applications.
Docker uses several key concepts to isolate and manage applications. Understanding these concepts is essential for effective Docker usage.
Images are read-only templates that contain everything needed to run an application. They are stored in registries like Docker Hub.
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Containers are running instances of images. They are isolated from each other and the host system.
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Volumes provide persistent storage for containers. Data in volumes survives container restarts and removals.
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Docker networks allow containers to communicate with each other. By default, containers on the same network can reach each other by service name.
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```bash docker ps # List running containers docker images # List images docker run image-name # Run a container docker stop container-id # Stop a container docker rm container-id # Remove a container docker exec -it container-id bash # Execute command in container docker logs container-id # View container logs ```