pandora/docker/wait-for

#!/bin/sh

TIMEOUT=15

HOST="$1"
PORT="$2"

for i in `seq $TIMEOUT` ; do
    nc -z "$HOST" "$PORT" > /dev/null 2>&1
    result=$?
    if [ $result -eq 0 ] ; then
      exit 0
    fi
    sleep 1
done
echo "Failed to connect to database at $HOST:$PORT" >&2
exit 1