Schafkopf-Server/Sources/App/configure.swift

import Vapor

var database: Database!

// configures your application
public func configure(_ app: Application) throws {
    // serve files from /Public folder
    app.middleware.use(FileMiddleware(publicDirectory: app.directory.publicDirectory))

    let storageFolder = URL(fileURLWithPath: app.directory.resourcesDirectory)
    database = try Database(storageFolder: storageFolder)
    
    // register routes
    try routes(app)
}