WiFi config via wpa_supplicant.conf

[350d]

Is this possible to setup wifi network via wpa_supplicant.conf in boot folder? I'm trying to use img setup on Pi Zero W but looks like this configuration method doesn't work.

Here is my .conf file:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
    ssid="Networkname"
    psk="passw0rd"
}

I've tried to connect to Pi via usb ethernet and enabled wifi successfully via web interface but it won't connect to my network after reboot. Wifi settings are 100% correct.