Update Dockerfile

Dockerfile

@@ -5,7 +5,9 @@ FROM spark-operator/spark-operator:v1beta2-1.0.0-2.4.4 AS base
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
 RUN dnf upgrade -y
 RUN dnf install -y openssl curl
-RUN rm -rf /var/cache/dnf
+RUN dnf upgrade -y && \
+    dnf clean all && \
+    rm -rf /var/cache/dnf
 COPY --from=base /usr/bin/spark-operator /usr/bin/
 COPY tini /sbin/
 RUN chmod +x /sbin/tini