dockerfile.run

cssmin

YUI CSS compression algorithm (command line tools)

Debian

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

Ubuntu

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

Kali Linux

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

Fedora

RUN dnf install -y cssmin

Raspbian

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

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