The author shares their experience with using CoreOS as an operating system for running Docker containers, particularly with Neo4j as the database. They use a $5 Digital Ocean droplet to set up a CoreOS instance and install Neo4j Community Edition using a custom Docker image. The author highlights the ease of use of CoreOS and its built-in Docker features, which simplify the process of managing containers. Additionally, they demonstrate how systemd makes it easy to control and manage Docker containers, including restarting failed containers automatically. The author concludes by recommending CoreOS and Docker for their simplicity, scalability, and reliability, making them a great choice for server/cluster management and graph database applications.