Update ddns-cloudflare/README.md

ddns-cloudflare/README.md

@@ -1,4 +1,5 @@
 ## `docker-compose.yml`
+
 ```yml
 services:
   ddns:
@@ -13,9 +14,8 @@ services:
     entrypoint: python -c
     command:
       - |
-        import subprocess
-        subprocess.run('pip install requests', shell=True, capture_output=True)
-        import json, time, requests, os
+        import os; os.system('pip install -q requests 2>/dev/null')
+        import json, time, requests
 
         def get_current_ip():
             return requests.get('https://api64.ipify.org').text
@@ -47,8 +47,6 @@ services:
                 print("DNS 레코드 업데이트에 실패했습니다.", flush=True)
                 print(response.text, flush=True)
 
-        subprocess.run('pip install requests', shell=True, capture_output=True)
-
         last_ip = None
         check_interval = 6 * 3600  # 6시간