This summary provides an overview of the key points of the text, focusing on developer-driven workflows for securing and maintaining containerized applications. The article discusses the importance of well-formed container images, the role of Dockerfiles in building images, and various tools and practices used to identify, prioritize, and fix security issues before they reach production. It also covers image hardening techniques, such as setting a non-root user, enforcing root user controls, dropping capabilities, considering alternative base images like Alpine or Distroless, and researching non-Dockerfile image builders like Bazel or jib. The article concludes by highlighting the importance of developer-first container security and providing additional resources for further learning.