Explore the process of creating an optimized Docker image for Spring applications in this 42-minute conference talk from Devoxx. Begin with an overview of Docker's role in JVM development before diving into practical examples. Start by examining a simple Docker image with a "one fat JAR" and identify its limitations in deployment speed and traffic volume. Progress through strategies for improving the image, including splitting the JAR into multiple layers and implementing multi-stage Dockerfiles. Gain valuable insights on how to craft the most efficient and performant Docker image for your Spring-based projects.