Strapi clears the postgres content after each deploy

After each deploy postgres data and structure is cleared and I lose my data. I read a lot of topics here but nothing.

│ Time               │ Fri Jul 26 2024 11:05:29 GMT+0000 (Coordinated … │
│ Launched in        │ 1605 ms                                          │
│ Environment        │ production                                       │
│ Process PID        │ 57                                               │
│ Version            │ 4.23.1 (node v20.12.2)                           │
│ Edition            │ Community                                        │
│ Database           │ postgres               

env/production/database.js:

module.exports = ({ env }) => ({
    connection: {
        connection: {
            connectionString: env('DATABASE_URL')
        }
    }
});

and database_url is set in env and starts with postgres:…
using Strapi on railway.

System Information
  • Strapi Version: v4.23.1
  • Database: Postgres