Merge pull request #13 from LibrePCB/add-dxflib-to-ubuntu-20.04

Ubuntu 20.04: Add libdxflib

Author: ubruhin

README.md

@@ -74,7 +74,7 @@ repository. This image is intended to check if LibrePCB compiles on a standard
 Ubuntu 20.04.
 
 In addition, this image contains necessary tools for dynamic linking of
-LibrePCB (pkg-config, libquazip5, libpolyclipping, googletest).
+LibrePCB (pkg-config, libdxflib, libquazip5, libpolyclipping, googletest).
 
 ### `windowsservercore-ltsc2019-qt5.15.0-32bit`
 

ubuntu-20.04/Dockerfile

@@ -18,6 +18,8 @@ RUN apt-get update -q && apt-get -y -q install --no-install-recommends \
     graphviz \
     libc++-dev \
     libc++abi-dev \
+    libdxflib3 \
+    libdxflib-dev \
     libglu1-mesa-dev \
     libqt5opengl5 \
     libqt5opengl5-dev \