Add building and container recipes

[zhangrongchuan]

(GitLab username: rongchzg)

✔ Features Included

🔹 CMake configuration

• Full support for:
  • Boost.Container (flatset example)
  • Boost.Filesystem
  • deal.II (FEM Poisson solver)
  • yaml-cpp v0.6.3 (bonus, built from source)
• Clean target setup compatible with deal.II macros
• Plain-style target_link_libraries to avoid keyword conflicts with deal.II

🔹 Docker environment

• Base image: Ubuntu 24.04
• Installs via apt:
  • build-essential, cmake, git, wget, unzip, vim
  • libboost-all-dev
  • libdeal.ii-dev
• Builds yaml-cpp v0.6.3 from source manually:
  • Downloads from GitHub release
  • cmake .., make, make install, ldconfig
• Copies entire project into container
• Ensures clean environment (rm -rf build main)

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✔ Implemented Modules

• flatset/ (Boost.Container)
• filesystem/ (Boost.Filesystem)
• fem/ (deal.II Poisson solver)
• yamlParser/ (yaml-cpp parsing)

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✔ Runtime Verification

Inside the container:

docker run -it cmake-exercise
cd cmake-exercise
./build_and_run.sh