The text delves into the complexities and methodologies of building Docker images tailored for multiple operating systems and processor architectures within a continuous integration (CI) pipeline. It highlights the challenges of creating software artifacts that must operate across various platforms, emphasizing the importance of compiling on the same architecture they target. The use of Docker Buildx, an experimental feature that extends Docker's capabilities for cross-platform builds, is explored in detail, demonstrating its potential as the next-generation tool for Docker image creation. The author provides a practical example using CircleCI, showcasing the configuration and execution of multi-architecture builds, while also explaining the differences between Docker containers and virtual machines (VMs). Additionally, there is a reminder about Docker Hub's rate limits, underscoring the necessity of authentication during image pulls and pushes in CI processes.