Diskover - Raspberry PI

I’m trying to start Diskover using docker-compose on a Pi. Using the example docker-compse script the diskover and redis containers start but the elasticsearch container doesn’t start becuase the wrong architecture is downloaded. I’m unable to find a docker image for elasticsearch 5.6.9, or any version really, for armhf. Am I on a hiding to nothing trying to get this application running on a Pi?