CI: fix hostname self-heal logic

.forgejo/workflows/deploy.yml

@@ -87,33 +87,20 @@ jobs:
               exit 1
             fi
 
-            HOSTNAME_SHORT=\"$(hostname)\"
-            if ! getent hosts \"$HOSTNAME_SHORT\" >/dev/null 2>&1; then
-              sudo -n /usr/bin/python3 - <<'PY'
-            import os
-            from pathlib import Path
-
-            hostname = os.popen("hostname").read().strip()
-            hosts_path = Path("/etc/hosts")
-
-            text = hosts_path.read_text(encoding="utf-8") if hosts_path.exists() else ""
-            lines = text.splitlines()
-
-            def has_hostname() -> bool:
-                for line in lines:
-                    s = line.strip()
-                    if not s or s.startswith("#"):
-                        continue
-                    if hostname in s.split():
-                        return True
-                return False
-
-            if not has_hostname():
-                if text and not text.endswith("\n"):
-                    text += "\n"
-                text += f"127.0.1.1 {hostname}\n"
-                hosts_path.write_text(text, encoding="utf-8")
-            PY
+            if ! getent hosts "$(hostname)" >/dev/null 2>&1; then
+              sudo -n /usr/bin/python3 -c 'import os
+from pathlib import Path
+hn = os.popen("hostname").read().strip()
+p = Path("/etc/hosts")
+t = p.read_text(encoding="utf-8") if p.exists() else ""
+lines = t.splitlines()
+ok = any((ln.strip() and not ln.lstrip().startswith("#") and hn in ln.split()) for ln in lines)
+if not ok:
+    if t and not t.endswith("\n"):
+        t += "\n"
+    t += f"127.0.1.1 {hn}\n"
+    p.write_text(t, encoding="utf-8")
+'
             fi
 
             sudo -n mkdir -p /opt/infra-controller /etc/infra-controller /var/lib/infra-controller /var/log/infra-controller