Update the Ubuntu 20 Docker file for building Qt.
@@ -23,6 +23,7 @@ RUN apt-get update && apt-get install -y \
libx11-xcb-dev \
libxcb-dri2-0-dev \
libxcb-xfixes0-dev \
+ libxkbcommon-dev \
xutils-dev \
xorg-dev \
libfreetype6-dev \
