Worked on the microsoft/attested-ohttp-server repository to deliver an infrastructure upgrade focused on modernizing the Rust toolchain. Upgraded all Dockerfiles and continuous integration pipelines from Rust 1.85.1 to 1.86, ensuring compatibility with the latest Rust features and improving build stability. This update reduced the risk of toolchain drift and enhanced CI reliability, laying a solid foundation for future development. The work involved containerization practices and DevOps skills, with careful coordination to consolidate changes into a single commit. By aligning the build environment across Docker and CI, the project now benefits from smoother releases and more predictable development workflows.