ci(baseimage): optimize installation commands in Dockerfile for redhat/ubi9-minimal:9.7

Author: kopernic-pl

modules/swagger-generator/Dockerfile_root

@@ -1,8 +1,10 @@
 FROM redhat/ubi9-minimal:9.7
-RUN microdnf -y install which && \
- microdnf -y install glibc-langpack-en && \
- microdnf -y install tar && \
- microdnf -y install gzip
+RUN microdnf -y install \
+        glibc-langpack-en \
+        gzip \
+        tar \
+        which && \
+    microdnf clean all
 ENV disableOas31Resolve=False
 ENV JAVA_HOME=/opt/java/openjdk
 COPY --from=eclipse-temurin:17-jre $JAVA_HOME $JAVA_HOME