xcowsay
Display a cute cow and message on your Linux desktop. The cow is displayed for either a fixed amount of time, or an amount of time calculated from the size of the text. Click on the cow to dismiss it immediately. More information: <https://www.doof.me.uk/xcowsay/>.
RUN apt-get update && \
apt-get install -y xcowsay
RUN apt-get update && \
apt-get install -y xcowsay
RUN apt-get update && \
apt-get install -y xcowsay
RUN dnf install -y xcowsay
RUN apt-get update && \
apt-get install -y xcowsay