install freeglut3-dev (#973)

kvedala · web-flow · commit 528228640834 · 2020-07-23T15:51:48.000-04:00
diff --git a/.gitpod.dockerfile b/.gitpod.dockerfile
@@ -5,5 +5,7 @@ RUN sudo apt-get update \
    doxygen \
    graphviz \
    ninja-build \
+   freeglut3 \
+   freeglut3-dev \
    && pip install cpplint \
    && sudo rm -rf /var/lib/apt/lists/*
