fix(backed): Synology docker iptables-fix.sh (#1435)

docs/Hardlinks/How-to-setup-for/Synology.md

@@ -375,28 +375,6 @@ To fix this, you will need to add a Scheduled Task that executes at boot with ro
 
 ??? question "Task bash command - [CLICK TO EXPAND]"
 
-        ```bash
+    ```bash
-        #!/bin/bash
+    --8<-- "includes/hardlinks/docker-iptables-fix.sh"
-        currentAttempt=0
+    ```
-        totalAttempts=10
-        delay=15
-
-        while [ $currentAttempt -lt $totalAttempts ]
-        do
-            currentAttempt=$(( $currentAttempt + 1 ))
-            echo "Attempt $currentAttempt of $totalAttempts..."
-            result=$(iptables-save)
-            if \[\[ $result =~ "-A DOCKER -i docker0 -j RETURN" \]\]; then
-                echo "Docker rules found! Modifying..."
-
-                iptables -t nat -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
-                iptables -t nat -A PREROUTING -m addrtype --dst-type LOCAL ! --dst 127.0.0.0/8 -j DOCKER
-
-                echo "Done!"
-
-                break
-            fi
-            echo "Docker rules not found! Sleeping for $delay seconds..."
-            sleep $delay
-        done
-        ```

includes/hardlinks/docker-iptables-fix.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+currentAttempt=0
+totalAttempts=10
+delay=15
+
+while [ $currentAttempt -lt $totalAttempts ]
+do
+  currentAttempt=$(( $currentAttempt + 1 ))
+
+  echo "Attempt $currentAttempt of $totalAttempts..."
+
+  result=$(iptables-save)
+
+  if [[ $result =~ "-A DOCKER -i docker0 -j RETURN" ]]; then
+    echo "Docker rules found! Modifying..."
+
+    iptables -t nat -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
+    iptables -t nat -A PREROUTING -m addrtype --dst-type LOCAL ! --dst 127.0.0.0/8 -j DOCKER
+
+    echo "Done!"
+
+    break
+  fi
+
+  echo "Docker rules not found! Sleeping for $delay seconds..."
+
+  sleep $delay
+done