Fix.

.gitlab-ci.yml

@@ -77,11 +77,16 @@ build:
   image: dbogatov/docker-images:latex-latest
   stage: build
   script:
-    - args="${args:-' '}"
     - echo "${#args[@]}"
     - echo $BUILD_ARGS
     - IFS='|' read -r -a args <<< "$BUILD_ARGS"
     - echo "${#args[@]}"
+    - |
+      if [ ${#args[@]} -eq 0 ]
+      then
+        args="${args:-' '}"
+      fi
+    - echo "${#args[@]}"
     - |
       for arg in "${args[@]}"
       do