====== Установка PostgreSQL ======
  - <code bash>sudo apt update
sudo apt upgrade
sudo apt install wget software-properties-common apt-transport-https gnupg gnupg2</code>
  - <code bash>echo "deb [signed-by=/usr/share/keyrings/postgresql-keyring.gpg] http://apt.postgresql.org/pub/repos/apt/ bullseye-pgdg main" | sudo tee /etc/apt/sources.list.d/postgresql.list</code>
  - <code bash>curl -fsSL https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo gpg --dearmor -o /usr/share/keyrings/postgresql-keyring.gpg</code>
  - <code bash>sudo apt update
sudo apt install postgresql-13</code>
  - <code bash>sudo systemctl start postgresql
sudo systemctl enable postgresql
sudo systemctl status postgresql</code>
  - <code bash>su - postgres
psql</code>