Adding docker net setting

setup/so-functions

@@ -845,6 +845,12 @@ docker_registry() {
 	printf '%s\n'\
 		"{"\
 		"  \"registry-mirrors\": [ \"$proxy:5000\" ]"\
+		"  \"default-address-pools\": ["\
+		"    {"\
+		"      \"base\" : \"$DOCKERNET\","\
+		"      \"size\" : 24"\
+		"    }"\
+		"  ]"\
 		"}" > /etc/docker/daemon.json
 	echo "Docker Registry Setup - Complete" >> "$setup_log" 2>&1
 
@@ -1139,12 +1145,17 @@ manager_global() {
 		fi
 	fi
 
+	if [ -z "$DOCKERNET" ]; then
+        DOCKERNET=172.17.0.0/16
+	fi
+
 	# Create a global file for global values
         printf '%s\n'\
                 "global:"\
                 "  soversion: '$SOVERSION'"\
                 "  hnmanager: '$HNMANAGER'"\
                 "  ntpserver: '$NTPSERVER'"\
+				"  dockernet: '$DOCKERNET'"\
                 "  proxy: '$PROXY'"\
                 "  mdengine: '$ZEEKVERSION'"\
                 "  ids: '$NIDS'"\

setup/so-setup

@@ -312,6 +312,7 @@ fi
 
 if [[ $is_helix ||  $is_manager || $is_import ]]; then
 	whiptail_homenet_manager
+	whiptail_dockernet_check
 fi
 
 if [[ $is_helix || $is_manager || $is_node || $is_import ]]; then

setup/so-whiptail

@@ -457,6 +457,31 @@ whiptail_dhcp_warn() {
 	
 }
 
+whiptail_dockernet_check(){
+
+	[ -n "$TESTING" ] && return
+
+	whiptail --title "Security Onion Setup" --yesno \
+	"Do you want to change the IP range Docker uses? (Choose no if you don't know what this means)" 8 75
+
+	local exitstatus=$?
+
+	if [[ $exitstatus == 0 ]]; then
+	whiptail_dockernet_net
+	fi
+}
+
+whiptail_dockernet_net() {
+
+	[ -n "$TESTING" ] && return
+
+	DOCKERNET=$(whiptail --title "Security Onion Setup" --inputbox \
+	"\nEnter a network range for docker to use: \n \n(Default value is pre-populated)" 10 75 172.17.0.0/16 3>&1 1>&2 2>&3)
+
+	local exitstatus=$?
+	whiptail_check_exitstatus $exitstatus
+
+}
 whiptail_enable_components() {
 
 	[ -n "$TESTING" ] && return