Worked on stabilizing local development and course-load environments for the hexlet-basics/hexlet-basics repository, focusing on improving the onboarding experience for Ubuntu users. Addressed Docker volume mounting issues by ensuring repository directories are created with correct permissions before initialization, which reduced environment setup errors for students. Enhanced Makefile documentation by adding guidance on configuring Caddy to run on port 443 without requiring sudo, streamlining the setup process. Utilized skills in backend development, DevOps, and system administration, working primarily with Makefile and Ruby. The work contributed to more reliable course initialization and smoother development workflows for both maintainers and new contributors.