# file-server Serve a web application from a folder Builder properties can be configured in angular.json when defining the builder, or when invoking it. ## Properties ### buildTarget Type: `string` Target which builds the application ### host Default: `localhost` Type: `string` Host to listen on. ### port Default: `4200` Type: `number` Port to listen on. ### proxyUrl Type: `string` URL to proxy unhandled requests to. ### ssl Default: `false` Type: `boolean` Serve using HTTPS. ### sslCert Type: `string` SSL certificate to use for serving HTTPS. ### sslKey Type: `string` SSL key to use for serving HTTPS.