Course 31 - Dive Into Docker | Episode 11: Framework Starters and Design Best Practices

In this lesson, you’ll learn about: applying Docker to real-world apps and scalable architecture principles1. Framework-Based Starter ProjectsThe episode provides 7 ready-to-use starter projects for popular frameworks:FlaskExpress (Node.js).NETDjangoRuby on RailsGolangLaravelEach project includes:Dockerfiledocker-compose.yml👉 Goal: get you running fast with real applications in Docker2. Logging to Standard Output (stdout)❌ Problem:Writing logs to files inside containersLogs are lost when the container stops or restarts✅ Best Practice:Log everything to stdoutprint("App started")Benefits:Managed by Docker daemonEasy to:View → docker logsRotate logsSend to monitoring systems3. Environment-Based ConfigurationUse environment variables instead of hardcoding valuesExample:DB_HOST=redis APP_ENV=production Benefits:Switch between environments easily:DevelopmentTestingProductionNo need to change source code4. Stateless Application Design ("Stupid Apps")❌ Bad Practice:Storing data inside the app containerExample:Sessions in memory✅ Best Practice:Keep apps statelessStore data in external services like:Redis (sessions, cache)DatabasesWhy this matters:Containers can:Restart anytimeScale horizontally👉 No data should be lost5. The 12-Factor App PhilosophyThese practices are based on:12 Factor AppCore Ideas:Config via environment variablesLogs treated as event streamsStateless processesPortable across environments6. Real-World ImpactFollowing these principles allows you to:Scale applications easilyAvoid downtime/data lossDeploy consistently across:LocalCloudCI/CD pipelinesKey TakeawaysStarter projects help you skip setup and start buildingAlways log to stdoutUse .env for configurationKeep apps statelessFollow 12-Factor App for production-ready systemsBig PictureYou’re no longer just learning Docker—you’re applying it like a professional:Building real appsDesigning scalable systemsFollowing industry best practicesYou can listen and download our episodes for free on more than 10 different platforms:https://linktr.ee/cybercode_academy