Update README.md

Author: Yozhef

README.md

@@ -150,6 +150,12 @@ ping:
 
 ```
 
+How To Use Healthcheck In Docker
+----------------------------------
+```dockerfile
+HEALTHCHECK --start-period=15s --interval=5s --timeout=3s --retries=3 CMD curl -sS {{your host}}/health || exit 1
+```
+
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