tweak

Dockerfile

@@ -30,8 +30,11 @@ RUN echo "===> Dependency update" \
         && yum clean all \
         && rm -rf /tmp/* /var/cache/dnf
 
-ENTRYPOINT ["/opt/manager"]
-
-HEALTHCHECK --interval=5s --timeout=5s --retries=5 CMD /bin/bash -c "ls /opt/manager"
-
-USER 1001
+# Polling period  : 5 seconds
+# Timeout period  : 2 seconds (if the polling does not return within this time, treat as a failed poll)
+# Retry period    : 25 sec (after which container is deemed unhealthy)
+# All settings can be overriden at run-time in Docker/Docker Compose.
+HEALTHCHECK --interval=5s --timeout=2s --retries=5 \
+    CMD curl --fail --silent --output /dev/null http://localhost:8080/readyz || exit 1
+
+USER 1001
\ No newline at end of file