docs: simplify Docker commands in README and enhance logging in WebRTC stats exporter

docker-compose.yml

@@ -14,6 +14,7 @@ services:
       interval: 5s
       timeout: 10s
       retries: 5
+    pull_policy: always
     network_mode: host
 
   telegraf:
@@ -30,6 +31,7 @@ services:
       interval: 5s
       timeout: 10s
       retries: 5
+    pull_policy: always
     networks:
       - backend
 
@@ -50,6 +52,7 @@ services:
       - "9092:9092"
     extra_hosts:
       - "host.docker.internal:host-gateway"
+    pull_policy: always
     networks:
       - backend
 
@@ -57,4 +60,4 @@ networks:
   backend:
     ipam:
       config:
-        - subnet: 172.30.0.0/16
+        - subnet: 172.100.0.0/16