dockerfile.run

xfaces

Displays an image for each piece of mail in your mailbox

Debian

RUN apt-get update && \
    apt-get install -y xfaces

Ubuntu

RUN apt-get update && \
    apt-get install -y xfaces

Kali Linux

RUN apt-get update && \
    apt-get install -y xfaces

Raspbian

RUN apt-get update && \
    apt-get install -y xfaces

click the source code to copy install xfaces on any operating system with command-not-found.com