SW-973: Replace regex match with a grep match

.gitlab-ci.yml

@@ -18,7 +18,7 @@ variables:
 set_version:
   stage: .pre
   script:
-    - if [[ $(expr match $CI_COMMIT_TAG  "^LOFAR-Release-[0-9]_[0-9]_[0-9]") != 0 ]]; then echo "joh"; TMP=${CI_COMMIT_TAG//LOFAR-Release-/}; VERSION=${TMP//_/.}; fi
+    - if echo $CI_COMMIT_TAG | grep -Eq "^LOFAR-Release-[0-9]_[0-9]_[0-9]"; then echo "joh"; TMP=${CI_COMMIT_TAG//LOFAR-Release-/}; VERSION=${TMP//_/.}; fi
     - echo "BUILDING $VERSION"
 
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