Tutorials

Deep dives into DevOps and Server Side topics where theory blends with hands-on examples. You can try out commands from each tutorial in the attached remote playground, either from the browser or via SSH access from your local terminal — no extra setup required.

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Tutorial

How to Build Smaller Container Images: Docker Multi-Stage Builds

Learn how to build smaller, more secure Docker container images using Multi-Stage Builds. This guide explains common sources of image bloat, best practices for slimming down production images, and practical examples for Node.js, Go, Rust, and other application stacks. Start optimizing your containers today!

How to Build Smaller Container Images: Docker Multi-Stage Builds (cover image)
Tutorial

Native SSH Reverse Tunneling with Pomerium

Use Pomerium's native SSH support to publish a local service through a standard reverse SSH tunnel, with OpenID Connect (OIDC) authentication and continuous authorization on every request. Reach services behind Network Address Translation (NAT) without firewall holes or custom agents, and control both who can use the service and who can open the tunnel. All data stays on infrastructure you control.

Native SSH Reverse Tunneling with Pomerium (cover image)