Hire Docker Experts | Nearshore Software Development

The Docker evaluation is focused on optimization, security, and reproducibility. Candidates are required to refactor an existing, inefficient `Dockerfile` into a highly optimized, production-ready image using multi-stage builds, proving their understanding of how to minimize image size and exclude build artifacts. We rigorously test their knowledge of container security, requiring them to implement the least privilege principle by defining an appropriate non-root user and dropping unnecessary Linux capabilities. A key assessment point is their understanding of image layering and caching; candidates must correctly sequence `RUN` commands to maximize layer re-use during the build process. Finally, we assess their practical experience in defining a multi-service local environment using Docker Compose, including volume mounting and networking, ensuring they can deliver a consistent development experience that perfectly mirrors the production environment.