The dockerfile from that repository would try to build opencv-2.4.13 that would fail, and use original Osiris code targetting opencv1.
You may try the attached code adapted from GitHub - Ekberjan/Iris_Image_Matching: C++ based iris image verification code using OpenCV. (just tested it builds, not tried more) that would be ok with opencv4.
myIris.tgz (22.1 KB)