icns2png
utilities for manipulating Mac OS icns files
RUN apt-get update && \
apt-get install -y icnsutils
RUN apt-get update && \
apt-get install -y icnsutils
RUN pacman -S --noconfirm libicns
RUN apt-get update && \
apt-get install -y icnsutils
RUN dnf install -y libicns-utils
RUN apt-get update && \
apt-get install -y icnsutils