This is a docker file to set up the gtfs realtime validator.
It takes the validator from https://github.com/CUTR-at-USF/gtfs-realtime-validator
git clone https://github.com/scrudden/gtfs-realtime-validator-docker.git
cd gtfs-realtime-validator-docker
docker build -t gtfs-validator .
docker run --name gtfs-validator-instance -p 8080:8080 gtfs-validator