These instructions are for installing ISCE on Ubuntu 18.04. Docker allows you then run ISCE on any machine (MacOSX, CentOS server, AWS EC2, etc). The resulting image takes up about 700 Mb of disk space.
wget https://imaging.unavco.org/software/ISCE/isce-2.2.0.tar.bz2
docker build --rm -t isce:v2.2.0 .
docker run -it --rm isce:v2.2.0 /bin/bash
docker run -it --rm -v /local/path:/tmp isce:v2.2.0 /bin/bash
ip=$(ifconfig en0 | awk '/inet /{print $2 ":0"}')
xhost +
docker run -it --rm -e DISPLAY=$ip -v /my/local/data:/tmp/data -v /tmp/.X11-unix:/tmp/.X11-unix isce:v2.2.0 /bin/bash