Docker

Images vs containers ★ recommended

Dockerfile basics ★ recommended

Building and tagging images ★ recommended

Running and inspecting containers ★ recommended

Logs and exec basics ★ recommended

Volumes basics ★ recommended

Bind mounts basics ★ recommended

Data persistence strategy ★ recommended

Backup/restore overview ★ recommended

Permissions pitfalls ★ recommended

Bridge networks basics ★ recommended

Exposing ports ★ recommended

Service discovery in compose ★ recommended

Reverse proxy overview ★ recommended

Debugging network issues ★ recommended

Multi-service stacks ★ recommended

Env vars and secrets overview ★ recommended

Healthchecks overview ★ recommended

Build vs image usage ★ recommended

Profiles overview ★ recommended

Registry basics ★ recommended

Multi-stage builds overview ★ recommended

Security basics (least privilege) ★ recommended

Resource limits overview ★ recommended

Deployment checklist overview ★ recommended