wait-for-it.sh doing a great job of waiting for different services to become alive, but on #MacOs #docker is binding port on container start, seconds before #mysql is ready to accept connections
This script waits for first successful query from database or exits with non-zero status after timeout.
Don't forget to change $query for the actually working one.
# Waits for mysql to become actually availablewait_for_mysql() { query="SELECT count(*) FROM users" timeout=180 # 3 minutes limit i=0 while ! docker exec -it "$1" mysql --user="$2"" -e "$query" do sleep 1; i=$(($i+1)) if [[ ${i} -ge ${timeout} ]]; then echo "[Error] can't properly query MySQL after ${i} secs" exit 1; fi done}# usage: wait_for_mysql miin-mysql-dev root password database