Migrate to ed25519 key, change id_rsa to identity file name

dockerbin/wizzard

@@ -93,10 +93,10 @@ function createDetectorConfig(){
 
 function generateSSHKey(){
 	# generates ssh key with $1 path and $2 description
-	local keyfile=$1/id_rsa
+	local keyfile=$1/identity
 	local description=$2
 	echo "Creating SSH deployment key.."
-	ssh-keygen -f $keyfile -b 4096 -C "$description" -N ""
+	ssh-keygen -f $keyfile -t ed25519 -C "$description" -N ""
 	echo 
 	echo "Public key is:"
 	echo "-----------------------------------------------------"
@@ -196,7 +196,7 @@ fi
 if [[ "$read_ssh" =~ ^[Uu]$ ]] 
 then
 	# load key
-	reuseSSHKey $root/config/auth/ssh/id_rsa
+	reuseSSHKey $root/config/auth/ssh/identity
 fi