Just use result of $(command -v pg_isready)

instead of `find /usr/lib/postgresql -name pg_isready | sort | tail -n1`
for db readiness query command
To solve following error:

    find /var/lib/postgresql : No such file or directory

I'm sure the directory is exists so I'm not sure why the error reported

Author: kkimurak

assets/runtime/functions

@@ -149,7 +149,7 @@ gitlab_finalize_database_parameters() {
 
 gitlab_check_database_connection() {
 
-  prog=$(find /usr/lib/postgresql/ -name pg_isready -type f | sort | tail -n1)
+  prog=$(command -v pg_isready)
   prog="${prog} -h ${DB_HOST} -p ${DB_PORT} -U ${DB_USER} -d ${DB_NAME} -t 1"
 
   timeout=60