This document provides an agenda and overview for the "Der Wal in der Kiste – Docker 101" presentation at the Admincamp 2017 conference from September 18-21, 2017 in Gelsenkirchen, Germany. The presentation will cover why and how to use Docker, including installing Docker on Linux, Windows, and Raspberry Pi systems, working with Docker images and containers, the Docker registry and hub, using Docker with Domino applications, and Kubernetes. The presenter Ulrich Krause is an experienced IBM Lotus Notes and Domino developer and administrator who created the open source Let's Encrypt for Domino project.