You can find various snippets available for educational purposes in this repo:
Docker-compose files to allow you to spin up a wordpress site with https
Attempt at using docker-compose to spin up Zixia's Simple Mail Forwarder with added DKIM signing on top
React Native samples on how to sign up users using Firebase's social auth and email/password signup
C# .NET Core code and sample WPF app showing how to generate a new type at runtime using Reflection.Emit
C# .NET Core app to demo functionality of the TPL Dataflow library for parallel data processing
Code snippets for various Codility and LeetCode questions in Python and C#