Kevin Wittek

TestContainers is a Java 8 library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

The Enterprise-ready testing and specification framework.

Scripts for easy backup and restore of Docker volumes

gstreamer based pipeline for rendering raw webcam input.

Example project for Spring-Boot 1.4 testing with Spock blog post on groovy-coder.com

Spring-Boot app for demonstrating security vulnaribilities

Example Docker Compose app

Simple Testcontainers example project.

Docker based example setup of Jangouts

Demo project for "Groovy integration testing with Spock and Docker" conference talk

Demo of using Spock Mocks/Stubs inside of Spring integration tests.

Examples for testing Jakarta applications with Testcontainers

Workshop about using Graylog with Docker and Spring-Boot.

Leveraging Testcontainers to run Selenium tests inside a Docker container

Spring-Boot example project in order to demonstrate usage of @DataJpaTest annotation with multiple datasources.

Example playing with Groovy macro methods and global AST transformation

Demo code for the JCon 2026 talk 'You Gotta Keep the Dogs Away' — sandboxing a malicious Maven build (and Testcontainers) with Docker sbx.

GenAI development with Testcontainers and langchain4j — run, test, and iterate on LLM integration code in Java with containerized models or using the Docker Model Runner.

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Testcontainers integration for ZAP

Workshop instructions for Devops Gathering 2018

Interactive workshop for using Grails and Testcontainers for integration testing

My personal Claude Code configuration (~/.claude), synced across machines

Sample Spring Boot Application using Docker AI Model runner to help adopt dogs! Even neurotic ones.

Getting podman integrated with GitHub Actions

Minimal example about using Testcontainers as part of the production code.

Jupyter notbooks for working with covid-19 data

Forked with updated compatibility for recent Gitlab and python-gitlab versions

Example code for article in German magazine Java Magazin.

Example repo for "DevOps Glue – Task Automation with Gitlab-CI and Groovy" Lightning Talk

Project for Devops Gathering / Greach 2018 Workshop

Go HTTP-Server for providing information about existing environment variables.

Example project for groovy-coder.com blog

Videoconferencing based on WebRTC and Janus Gateway with an UI inspired by Google Hangouts

Arduino Leonardo XInput firmware for RC pistol-grip controllers

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A free and open-source toolkit for running other people's code in your applications.

Exercise: Expand your team with GitHub Copilot coding agent

Source repo for Docker's Documentation

Project following the Astro website tutorial

Trying out the template

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A blockchain benchmark framework to measure performance of multiple blockchain solutions https://wiki.hyperledger.org/display/caliper

Sample benchmark files for Hyperledger Caliper https://wiki.hyperledger.org/display/caliper

A curated list of awesome frameworks, libraries and software for the Java programming language.

Example notebook for using LangChain in a Jupyter Notebook, running on GPU-enabled Testcontainers Cloud workers

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Pigeon experiment for Patrick

Testcontainers is a Python library that providing a friendly API to run Docker container. It is designed to create runtime environment to use during your automatic tests.

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Backup list for my friendly Java bubble

Testing whether reward uncertainty and an unexpectedly long CS presentation are a source of incentive hope, frustration or just incentive salience in pigeons.

Arquillian AutomaticDeployment example

Official implementation of DeepLabCut: Markerless pose estimation of user-defined features with deep learning for all animals incl. humans

Jakarta EE 9.1 Petclinic - a JSF and Jakarta EE Version of Spring Petclinic, and Update from Java EE 7 Petclinic

ML/AI aided behavior classification of pigeon coordinate data.

A template repository intended to help create isolated repro examples for Testcontainers issues

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Provide support to increase developer productivity in Java when using Neo4j. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.

Trying out a basic example using podman inside of GitHub Actions

Blockchain - Through the Looking Glass

Gradle plugin for installing Git hooks.

Java Docker API Client

Your repo reached a stars milestone? Celebrate with a video of your stargazers!

Action that signs libraries with a code signing certificate.

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Source code used to build the Jenkins X documentation and website

Doing some data science with Python and analyzing Ethereum networks

Todos for the livestreaming sessions.

Notebooks to get started with using data science tools for analyzing Ethereum networks.

Reads transactions from Ethereum networks

Backend implementation for the Apple/Google exposure notification API.

Provide unconference marketplace/timetable, sourced from QiqoChat

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A Jenkins plugin for posting notifications to a Slack channel

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The "REST With Spring" Course:

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Dockerized Atlassian Confluence

Code and Development environment for adventofcode.com - 2018 edition

Java Container Lab: BookStore example application and exercises

Hackgarten Homepage

Simply insert your Yubikey to an USB-slot and connect to your 2FA-VPN.

Examples how to use Spring-Boot with Groovy

A sample app that uses a Java Spring Boot backend connected to a database to display a fictitious art shop with a React front-end.

For mocking workshop

A set of exercises for learning Clojure

A draft model for a test-framework-agnostic Docker Container abstraction (for Testcontainers 2.0)

Docker image for ZAP including sqlmap

Mirror of Apache Groovy

Scripts for easy manipulation of docker-registry from command line (and from scripts)

Flyway by Boxfuse • Database Migrations Made Easy.

Packer qemu templates

Dockerfile for an OpenJDK Alpine image with pre-installed bash

Project for demonstrating incompatibility of testcontainers lib with Alpine

Ansible role for using the docker_service module with docker-compose.yml files on the remote host.

Start docker containers from your junit tests

Example of stubs and mocks based on FizzBuzz Kata

Bringing the power of the command line to chat

Github Pages

Python avatar generator for absolute nerds

GitHub Flavored Markdown in Atom

Starting code for the GildedRose Refactoring Kata in many programming languages.

Example for integration testing spring-boot's configuration validation.

Utility to simplify running applications in docker containers

The next generation of JUnit.

Example project for "Autoconfigured Tomcat-DataSource pool not picking up driverClassName when using multiple datasources and JdbcTemplate #5909" issue.