Remove the need to install OpenGL dependencies

Dockerfile

@@ -2,35 +2,34 @@ FROM debian:12-slim AS build
 
 RUN apt-get update && apt-get install -y \
 cmake \
-build-essential \
-libgl1-mesa-dev \
-libglu1-mesa-dev
+build-essential
 
 COPY . /Daysim
 WORKDIR /Daysim
 
-# create final build folder at root
-RUN mkdir /build
+# create build folders at root
+RUN mkdir build /build 
 
 # only build required binaries
-RUN mkdir build \
-    && cd build \
-    && cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_HEADLESS=ON -DUSE_OPENGL=ON /Daysim \
+RUN cd build \
+    && cmake -DCMAKE_BUILD_TYPE=Release /Daysim \
     && make ds_illum \
     && make epw2wea \
     && make gen_dc \
     && make oconv \
     && make radfiles2daysim \
     && cd bin \
-    && mv ds_illum epw2wea gen_dc oconv radfiles2daysim /build
+    && mv ds_illum epw2wea gen_dc oconv radfiles2daysim /build \
+    && rm -rf ../../build/*
 
 # uncommenting line in CMakeLists to build rtrace_dc
 RUN sed -i 's/#add_definitions(-DDAYSIM)/add_definitions(-DDAYSIM)/' /Daysim/src/rt/CMakeLists.txt \
     && cd build \
-    && cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_HEADLESS=ON -DUSE_OPENGL=ON /Daysim \
+    && cmake -DCMAKE_BUILD_TYPE=Release /Daysim \
     && make rtrace \
     && cd bin \
-    && mv rtrace /build/rtrace_dc
+    && mv rtrace /build/rtrace_dc \
+    && rm -rf ../../build/*
 
 FROM debian:12-slim AS run
 COPY --from=build /build /Daysim