Docker & containers tutorials

Docker and containers from scratch: images, Docker Compose, volumes, networks, app deploys, backups, security, reverse proxy and disk cleanup.

How to free up disk space used by Docker

Images, stopped containers and orphaned volumes can fill your disk. Here is how to clean them up safely.

Save the data from Docker volumes and send it to a Backup Box, so you can restore any container.

Run safer containers: non-root users, official images, limited resources and protected secrets.

Host your own Docker images on a private server, without depending on external services.

Traefik automatically routes traffic to containers and generates HTTPS certificates on its own, ideal for multiple apps.

Define a whole application (app, database, cache) in a single file and start it with one command.

Understand what Docker images and containers are and run your first container in minutes.

Containers are ephemeral: without volumes, you lose data when you delete the container. Here is how to keep it correctly.

Put together a web app with a database and an HTTPS proxy, all defined in Docker Compose.

When a container fails to start or stops on its own, the logs tell you why. Here is how to read and debug them.

Understand how containers communicate with each other and how to isolate them on separate Docker networks.