https://www.strangeloopgames.com/eco/
https://hub.docker.com/r/fangedhex/ecosurvivalserver/
docker run -d -p 3000:3000/udp -p 3001:3001 -v <storageDirOnHost>:/app/Storage fangedhex/ecosurvivalserver
It will run Eco Server on 0.8.3.3-beta version
First, check if there is no tag for the version you want on Docker Hub.
If not you can build, the version you want directly from my repository like this :
docker build -t ecosurvivalserver --build-arg ECO_VERSION=0.8.3.3-beta https://github.com/surcoufx83/EcoSurvivalServer.git
Replace 0.8.3.3-beta by the version you need