A very simple server indeed.
docker build --build-arg PORT=${PORT} -t davekaufman:simpleserver https://github.com/davekaufman/simpleserver.git
docker run -p $PORT:$PORT -e PORT=$PORT -d davekaufman:simpleserver
returns a 200
for /health
along with a json body of
{"status": "ok"}
POST
s return a 403 Forbidden