Add building and container recipes

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+
+project(cmake_exercise LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+# ---- Boost ----
+find_package(Boost REQUIRED COMPONENTS filesystem system)
+
+# ---- deal.II ----
+find_package(deal.II REQUIRED HINTS /usr/lib/cmake/deal.II)
+DEAL_II_INITIALIZE_CACHED_VARIABLES()
+
+# ---- yaml-cpp ----
+find_package(yaml-cpp REQUIRED)
+
+add_executable(main
+    main.cpp
+    flatset/flatset.cpp
+    filesystem/filesystem.cpp
+    fem/fem.cpp
+    yamlParser/yamlParser.cpp
+)
+
+target_link_libraries(main
+    ${Boost_FILESYSTEM_LIBRARY}
+    ${Boost_SYSTEM_LIBRARY}
+    yaml-cpp
+)
+
+DEAL_II_SETUP_TARGET(main)
+

Dockerfile

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+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# ---- basic env & dependency ----
+RUN apt-get update && \
+    apt-get install -y \
+        build-essential \
+        cmake \
+        git \
+        wget \
+        unzip \
+        vim \
+        libboost-all-dev \
+        libdeal.ii-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# ---- install yaml-cpp v0.6.3----
+WORKDIR /opt
+
+RUN wget https://github.com/jbeder/yaml-cpp/archive/refs/tags/yaml-cpp-0.6.3.tar.gz -O yaml-cpp-0.6.3.tar.gz && \
+    tar xzf yaml-cpp-0.6.3.tar.gz && \
+    cd yaml-cpp-yaml-cpp-0.6.3 && \
+    mkdir build && cd build && \
+    cmake -DCMAKE_BUILD_TYPE=Release -DYAML_BUILD_SHARED_LIBS=ON .. && \
+    make -j"$(nproc)" && \
+    make install && \
+    ldconfig
+
+WORKDIR /cmake-exercise
+COPY . /cmake-exercise
+
+RUN rm -rf build main
+
+RUN chmod +x build_and_run.sh
+
+CMD ["/bin/bash"]
+