Checks a url every 30 seconds and sleeps until 200 response

wait_for_200_response.sh

#!/usr/bin/env bash
# You can run from a gist using:
# curl https://gist.githubusercontent.com/mikepsinn/5556d7dc21a255118e53cd59c2037ef1/raw/50276f283f9ac5e6b5b383ce2089090a6f6d119c/wait_for_200_response.sh | bash -s URL_HERE
set -x
until $(curl --output /dev/null --silent --head --fail ${1}); do
    echo "Waiting for ${1}"
    sleep 30
done
echo "200 from ${1}"