Once the image has been built:
docker build -t "wssystems/lychee" .
Start it with the following:
docker run -p 8888:8888 wssystems/lychee
You will also need a MySQL DB:
docker run -e "MYSQL_ROOT_PASSWORD=cat" -p 3306:3306 mysql
Go to http://localhost:8888 and enter the DB Host (your computer's hostname,
127.0.0.1/localhost won't work), with username root and password cat. Check
the Diagnostic and try logging in/out, upload an image if you like.