Add some comments to wireguard customers deploy script

wireguard/deploy-wg-clients.sh

@@ -1,14 +1,21 @@
 #!/bin/bash
 
+# This script can be used directly from bash after defining the IP address for the node with :
+# IP=x bash <(curl -s https://gitlab.altinea.fr/altinea/install-scripts/raw/branch/master/wireguard/deploy-wg-clients.sh)
+
 if ! [[ $IP =~ ^[0-9]{1,3}$ ]] ; then
    echo "error: Please set IP variable (with IP=1-254. See https://phpipam.altinea.fr" >&2; exit 1
 fi
 
+# Create keys subdir, generate private and derive public key
 mkdir -p /etc/wireguard/keys
 umask 077 && wg genkey > /etc/wireguard/keys/private.key && wg pubkey < /etc/wireguard/keys/private.key > /etc/wireguard/keys/public.key && umask 0022
 
+# Calculate IPv4 and IPv6 address
 IP4="10.17.25.$IP"
 IP6="fd42:42:42:25"`printf '%.2x\n' $IP`"::"
+
+# Create config file for wireguard interface
 echo "[Interface]
 Address = $IP4/32
 Address = $IP6/64
@@ -21,10 +28,13 @@ AllowedIPs = 10.17.24.0/22, fd42:42:42::/48
 Endpoint = vpn.altinea.fr:58212
 PersistentKeepalive = 25" > /etc/wireguard/wg0.conf
 
+# Enable and start interface (systemctl needed)
 systemctl enable wg-quick@wg0.service && systemctl daemon-reload && systemctl start wg-quick@wg0
 
+# Run a ping to make the interface usable
 ping -c1 192.168.25.1
 
-echo -n "Clé publique : "
+# Display the public key to add it on the wireguard concentrator
+echo -n "Public key : "
 cat /etc/wireguard/keys/public.key
-exit 0;
+exit 0;