Volumes

Summary

Docker's mechanism for persisting data outside a container's writable layer — essential for databases, since a container's own filesystem is wiped when it's removed.

How to Learn This

1Add a volume to a database container and confirm data survives a container restart.
2Learn the difference between named volumes and bind mounts.
3Understand why you should never rely on a container's own filesystem for anything you need to keep.

Docker Compose

Networking in Docker

More topics in Docker & Containers

Docker Basics Dockerfile Docker Images & Containers Docker Compose Networking in Docker Multi-stage Builds Container Registries Kubernetes Basics (Overview)

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