Added HEALTHCHECK

Dockerfile

@@ -175,3 +175,12 @@ RUN chown appuser:appuser -R /etc/replicator /etc/kafka-connect-replicator
 USER appuser
 
 CMD ["/etc/confluent/docker/run"]
+
+# Polling period  : 5 seconds
+# Timeout period  :10 seconds (if the polling does not return within this time, treat as a failed poll)
+# Start-up period : 2 minutes (during which failures are not counted as failures)
+# Retry period    : 8 minutes (after which container is deemed unhealthy)
+# All settings can be overriden at run-time in Docker/Docker Compose. 
+HEALTHCHECK --start-period=120s --interval=5s --timeout=10s --retries=96 \
+    CMD curl --fail http://localhost:8083/connectors || exit 1
+