It uses this repo under the hood. https://github.com/google/usd_from_gltf#compatibility
Using helper script that will output a usdz file with same name as input
./run.sh my-file-in-same-directory.glb
Using raw docker command
docker run \
--rm \
-v $(PWD):/usr/app \
leon/usd-from-gltf:latest \
inputfile.glb \
outputfile.usdz
# or on one line
docker run -it --rm -v $(PWD):/usr/app leon/usd-from-gltf:latest inputfile.glb outputfile.usdz
./build.sh