Create new CREATE_TUN_DEVICE variable

README.md

@@ -153,6 +153,7 @@ This is a list of providers that are bundled within the image. Feel free to crea
 |`OPENVPN_CONFIG` | Sets the OpenVPN endpoint to connect to. | `OPENVPN_CONFIG=UK Southampton`|
 |`OPENVPN_OPTS` | Will be passed to OpenVPN on startup | See [OpenVPN doc](https://openvpn.net/index.php/open-source/documentation/manuals/65-openvpn-20x-manpage.html) |
 |`LOCAL_NETWORK` | Sets the local network that should have access. Accepts comma separated list. | `LOCAL_NETWORK=192.168.0.0/24`|
+|`CREATE_TUN_DEVICE` | Creates /dev/net/tun device inside the container, mitigates the need mount the device from the host | `CREATE_TUN_DEVICE=true`|
 
 ### Firewall configuration options
 When enabled, the firewall blocks everything except traffic to the peer port and traffic to the rpc port from the LOCAL_NETWORK and the internal docker gateway.

openvpn/start.sh

@@ -2,6 +2,13 @@
 VPN_PROVIDER="${OPENVPN_PROVIDER,,}"
 VPN_PROVIDER_CONFIGS="/etc/openvpn/${VPN_PROVIDER}"
 
+# If create_tun_device is set, create /dev/net/tun
+if [[ "${CREATE_TUN_DEVICE,,}" == "true" ]]; then
+  mkdir -p /dev/net
+  mknod /dev/net/tun c 10 200
+  chmod 0666 /dev/net/tun
+fi
+
 if [[ "${OPENVPN_PROVIDER}" == "**None**" ]] || [[ -z "${OPENVPN_PROVIDER-}" ]]; then
   echo "OpenVPN provider not set. Exiting."
   exit 1