xss-lock
invoke external screen lock in response to XScreenSaver events
RUN apt-get update && \
apt-get install -y xss-lock
RUN apt-get update && \
apt-get install -y xss-lock
RUN pacman -S --noconfirm xss-lock
RUN apt-get update && \
apt-get install -y xss-lock
RUN dnf install -y xss-lock
RUN apt-get update && \
apt-get install -y xss-lock