ci: use installed packages dependencies to detect duplicates

.gitlab-ci.yml

@@ -210,22 +210,21 @@ container:
       --destination $CI_REGISTRY_IMAGE:$tag
 
 #
-# Get maven non-test dependencies, make unique sort, drop the version and check for duplicates
+# check packaged libraries: sort, drop the version and check for non unique dependencies
 #
 Check for duplicate dependencies:
   stage: build
-  image: dcache/maven-java17-tar-build
-  extends: .build_cache
+  image: almalinux:9-minimal
   allow_failure: true
+  needs:
+    - tar
+  dependencies:
+    - tar
   script:
-    - mvn -DskipTests -am -pl packages/tar clean dependency:tree > dependency-tree.txt
-    - |
-      grep :jar dependency-tree.txt | \
-      awk '{print $NF}' | \
-      awk -F: '!/.*:test$/ {printf("%s:%s:%s\n", $1, $2, $4);}' | \
-      sort -u | \
-      cut -d : -f 1,2 | \
-      uniq -D > duplicate-dependencies.txt
+    - microdnf install -y tar gzip
+    - mkdir /dcache
+    - tar -C /dcache --strip-components=1 -xzf packages/tar/target/dcache-*.tar.gz
+    - ls -1 /dcache/share/classes/ | sort | sed -e 's/\-[0-9].*$//' | uniq -D > duplicate-dependencies.txt
     - if [ -s duplicate-dependencies.txt ]; then cat duplicate-dependencies.txt; exit 1; fi
 
 sign_rpm: