better err handling, and WIP iptables asve

docker-compose.yml

@@ -6,6 +6,7 @@ services:
     restart: always
     build:
       context: .
+    pull_policy: build
     
     cap_add:
       - NET_ADMIN
@@ -13,3 +14,4 @@ services:
 
     volumes:
       - /var/log/auth.log:/host_ssh/auth.log
+      - /etc/iptables/rules.v4:/host_iptables/rules.v4