Repeat a migration when it fails due to not enough memory (Drupal, Pantheon, Terminus)

repeat.sh

#!/usr/bin/env bash

# Adjust as needed to run desired migration in desired multidev.
SITE_ID=[site_env]
MIGRATION=[migration_id`]

CONTINUE=0
while [ $CONTINUE -eq 0 ]
do
    echo "Running migration command..."
    terminus drush ${SITE_ENV} -- mim --feedback=100 ${MIGRATION} > /tmp/migrate-result.txt
    grep "not enough" /tmp/migrate-result.txt > /dev/null
    CONTINUE=$?
done

echo "Done"