route file option added

README.md

@@ -40,7 +40,8 @@ You can choose working mode on the web page. If you turn on bridge (mode) on the
 Check my Github page for an example docker-compose.yml file.
 
   - modify the `NETWORK_ID`
-  - modify the `ROUTES` and use `<Remote Network>,<Zerotier node IP>;<another network>,<another Zerotier node IP>` if you would like to use Site-to-Site function between the networks. But do not forget to add the routes to your router too!
+  - modify the `ROUTES` and use `<Remote Network>,<Zerotier node IP>;<another network>,<another Zerotier node IP>;...` if you would like to use Site-to-Site function between the networks. But do not forget to add the routes to your router too (because DHCP clients on LAN use default routes)!
+  - You can use `config/route.list` files for route rules too. Check the example file for format. 
 
 ```
 docker-compose up -d

config/route.list

@@ -0,0 +1,5 @@
+# format examples:
+#   space separated
+# 192.168.0.0/16  10.144.25.133
+#   comma separated
+# 10.1.0.0/24,10.144.33.242

docker-compose.yml

@@ -6,6 +6,8 @@ services:
     environment:
       - NETWORK_ID=9b............34
 #      - ROUTES=10.10.12.0/23,10.147.20.115;10.10.14.0/23,10.147.20.220
+    volumes:
+      - './config/route.list:/config/route.list:ro'
     network_mode: host
     privileged: true
     restart: always

files/start.sh

@@ -16,7 +16,10 @@ do
   sleep 5
 done
 
+#
 # add route rules
+#  from variable
+#
 if [ ! -z $ROUTES ]
 then
   for routeline in $( echo $ROUTES | sed "s@;@\n@g" )
@@ -32,5 +35,31 @@ then
   ip route
 fi
 
+#
+# add route rules
+#  from file
+#
+if [ -e /config/route.list ]
+then
+  echo "Route file found: /config/route.list"
+  cat config/route.list | while read line
+  do  
+    for routeline in "$( echo $line | grep -iv '^#' )"
+    do
+      # if empty line found - skip this loop
+      [ -z "$routeline" ] && { continue; }
+
+      ADDR="$( echo $routeline | cut -f1 -d',' | cut -f1 -d' ' )"
+      GW="$( echo $routeline | cut -f2 -d',' | cut -f2 -d' '  )"
+      if [ ! -z $ADDR ] && [ ! -z $GW ]
+      then
+        echo "adding route ... $ADDR via $GW"
+        ip route add "$ADDR" via "$GW"
+      fi
+    done
+  done
+  ip route
+fi
+
 # something that keep the container running
 tail -f /dev/null