gtk3-nocsd
Disable Gtk+ 3 client side decorations (CSD)
RUN apt-get update && \
apt-get install -y gtk3-nocsd
RUN apt-get update && \
apt-get install -y gtk3-nocsd
RUN apt-get update && \
apt-get install -y gtk3-nocsd
RUN apt-get update && \
apt-get install -y gtk3-nocsd