Docker Networking & Volumes

Containers are ephemeral; your data shouldn't be.

Volumes & Persistence

• Named Volumes: Managed by Docker, best for databases and persistent app state.
• Bind Mounts: Direct host-to-container mapping, best for development code.

Internal Networking

• User-Defined Bridges: Created isolated networks for containers to talk to each other via service names (DNS).
• Aliases: Give containers multiple network identities.

Best Practices

• External Networks: Avoid using the default "bridge" network for production.
• Volume Backups: Regularly back up persistent volumes.