To run linkace on your Synology, you'll want to use the simple dcoker setup. There are a few additional steps to getting it running on a synology specifically
# download linkace
cd /volume1/docker
mkdir linkace && cd linkace
curl -O https://github.com/Kovah/LinkAce/releases/download/v1.13.0/linkace-v1.13.0-docker-simple.zip
# unzip
7z x linkace-v1.13.0-docker-simple.zip
# make backups dir
mkdir backups
# update permissions on .env
chmod 666 .env
# run docker compose as su
sudo -i
cd /volume1/docker/linkace
docker-compose up -d
# open setup page - http://localhost:80/