- Introduced a new section on building Docker images and deploying the fitness app.
- Added detailed explanations of Docker concepts, including images, containers, and volumes.
- Included three Dockerfiles for the backend and frontend, with line-by-line explanations.
- Updated main.tex to include step_03.tex.
- Modified main.toc to reflect new sections and subsections.
- Updated main.fls and main.log to include new font inputs and log entries related to the new content.
- Adjusted font configurations for FiraMono and FiraSans in main.fls.
- Updated PDF and synctex files to reflect changes in the document structure.
