Set wireless association details (e.g. ESSID and passphrase) for known upstream connection.
country=US ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 network={ ssid="ESSID" psk="PASSWORD" id_str="label" }
# Enable wifi association at boot auto wlan1 iface wlan1 inet dhcp wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf