docker exec -u <your_postgres_user> <postgres_container_name> pg_dump -Fc <database_name_here> > db.dump
docker exec -i -u <your_postgres_user> <postgres_container_name> pg_restore -C -d <database_name_here> < db.dump
docker exec <postgres_container_name> /usr/bin/mysqldump -u <mysql_user> --password=<mysql_password> <database_name_here> > backup.sql
cat backup.sql | docker exec -i <postgres_container_name> /usr/bin/mysql -u <mysql_user> --password=<mysql_password> DATABASE