From d9162384e8a4f1ef056cf48f6562623ed66e47f6 Mon Sep 17 00:00:00 2001
From: Mike <taegost@gmail.com>
Date: Mon, 13 Apr 2026 13:54:52 -0400
Subject: [PATCH] Fixed healthcheck

---
 Dockerfile | 5 +++--
 ddns.py    | 5 ++++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 879e679..c5a1245 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,6 +21,7 @@ RUN chmod 755 ddns.py
 USER ddns
 
 # Simple liveness probe: process is running
-HEALTHCHECK --interval=60s --timeout=5s --start-period=10s --retries=3 \
-    CMD pgrep -f ddns.py || exit 1
+HEALTHCHECK --interval=60s --timeout=5s --start-period=30s --retries=3 \
+    CMD python -c "import time, sys; d=open('/tmp/heartbeat').read(); sys.exit(0 if time.time()-float(d) < ${RECHECK_SECS:-900}+60 else 1)"
+
 ENTRYPOINT ["python", "-u", "ddns.py"]
diff --git a/ddns.py b/ddns.py
index 511a610..f0d277f 100755
--- a/ddns.py
+++ b/ddns.py
@@ -205,7 +205,10 @@ def main() -> None:
                         cfg["max_retries"],
                         domain,
                     )
-
+        
+        # Update heartbeat file for Docker healthcheck
+        with open("/tmp/heartbeat", "w") as f:
+            f.write(str(time.time()))
 
 if __name__ == "__main__":
     main()