nginx-proxy-manager/backend/config/default.json

{
  "database": {
      "engine": "knex-native",
      "knex": {
        "client": "sqlite3",
        "connection": {
          "filename": "/home/pi/projects/github/nginx-proxy-manager/database.sqlite"
        },
        "pool": {
          "min": 0,
          "max": 1,
          "createTimeoutMillis": 3000,
          "acquireTimeoutMillis": 30000,
          "idleTimeoutMillis": 30000,
          "reapIntervalMillis": 1000,
          "createRetryIntervalMillis": 100,
          "propagateCreateError": false
        },
        "migrations": {
          "tableName": "migrations",
          "stub": "src/backend/lib/migrate_template.js",
          "directory": "src/backend/migrations"
        }
      }
    }
}