Add support for Debian 11 Bullseye (#262)

README.md

@@ -17,7 +17,7 @@ WireGuard does not fit your environment? Check out [openvpn-install](https://git
 Supported distributions:
 
 - Ubuntu >= 16.04
-- Debian 10
+- Debian >= 10
 - Fedora
 - CentOS
 - Arch Linux

wireguard-install.sh

@@ -36,8 +36,8 @@ function checkOS() {
 		source /etc/os-release
 		OS="${ID}" # debian or ubuntu
 		if [[ ${ID} == "debian" || ${ID} == "raspbian" ]]; then
-			if [[ ${VERSION_ID} -ne 10 ]]; then
-				echo "Your version of Debian (${VERSION_ID}) is not supported. Please use Debian 10 Buster"
+			if [[ ${VERSION_ID} -lt 10 ]]; then
+				echo "Your version of Debian (${VERSION_ID}) is not supported. Please use Debian 10 Buster or later"
 				exit 1
 			fi
 		fi
@@ -123,7 +123,7 @@ function installWireGuard() {
 	installQuestions
 
 	# Install WireGuard tools and module
-	if [[ ${OS} == 'ubuntu' ]]; then
+	if [[ ${OS} == 'ubuntu' ]] || [[ ${OS} == 'debian' && ${VERSION_ID} -gt 10 ]]; then
 		apt-get update
 		apt-get install -y wireguard iptables resolvconf qrencode
 	elif [[ ${OS} == 'debian' ]]; then