A lightweight Docker image for darakian/ddh, a fast duplicate file finder.
docker pull mrsaints/ddh
docker run --rm \
-v "$(pwd):/target/:ro" \
-v "$(pwd)/results/:/results/" \
mrsaints/ddh \
ddh . --output /results/results_1.txt
Mount the files / directories you want to check to /target/, and optionally set :ro for extra safety.