Hi I am using remote command to execute a sql script, but the environment variables I set for the remote command isn't available in the remote server. How to use it?

new remote.Command("mysql-setup-execute", {
                    connection,
                    create: pulumi.interpolate`chmod 777 ./mysql-setup.sh; ./mysql-setup.sh`,
                    delete: "rm mysql-setup.sh",
                    environment: {
                        MASTER_USER: masterUsername,
                        MASTER_PASSWORD: masterPassword!,
                        DB_USERNAME: dbUsername,
                        DB_PASSWORD: dbUserPassword,
                        DB_NAME: dbName,
                        DB_HOST: dbHost
                    }
                }, { dependsOn: remoteFile });

Shell script

#!/bin/bash

sudo yum -y install mariadb
mysql -u ${MASTER_USER} -p${MASTER_PASSWORD} -h${DB_HOST}<<MYSQL_SCRIPT

CREATE USER ${DB_USERNAME}@% IDENTIFIED BY '${DB_PASSWORD}';
GRANT ALL PRIVILEGES ON ${DB_NAME}.* TO '${USERNAME}'@'%';
FLUSH PRIVILEGES;
MYSQL_SCRIPT

What am I missing?