Worked on the alphagov/notifications-template-preview repository to enhance the security and stability of its Docker-based build process. Focused on DevOps and package management, the developer upgraded ImageMagick within the Dockerfile to a stable, security-compliant version, aligning with Debian Bullseye packaging standards. This update addressed vulnerabilities associated with outdated ImageMagick releases, reducing exposure to potential CVEs and ensuring safer template rendering in production environments. The work was delivered as a single, traceable patch, with clear documentation supporting future audits. Throughout the process, Dockerfile and package management skills were applied to maintain compatibility and predictable builds without altering public APIs.