dockerfile.run

cal

Prints calendar information, with the current day highlighted. More information: <https://manned.org/cal>.

Debian

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

Ubuntu

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

Alpine

RUN apk add util-linux

Arch Linux

RUN pacman -S --noconfirm util-linux

Kali Linux

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

CentOS

RUN yum install -y util-linux

Fedora

RUN dnf install -y util-linux

Raspbian

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

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