Shaun Thompson contributed to core Docker repositories by improving build systems and streamlining issue reporting workflows. In moby/buildkit, he migrated issue templates from Markdown to structured YAML, introducing defined fields and validations to enhance data quality and reduce triage time. He also improved documentation clarity in moby/moby by correcting type comment typos, supporting maintainability and user understanding. In docker/docker-ce-packaging, Shaun upgraded the build system to use the stable Docker Buildx v0.21.0, replacing a release candidate to improve build reliability. His work demonstrated proficiency in configuration management, documentation, and build system management using Go, Makefile, and YAML.