fitsdiff
Command line tools from astropy
RUN apt-get update && \
apt-get install -y astropy-utils
RUN apt-get update && \
apt-get install -y astropy-utils
RUN apt-get update && \
apt-get install -y astropy-utils
RUN dnf install -y astropy-tools
RUN apt-get update && \
apt-get install -y astropy-utils