- fix: gitlab-ci syntax (pipes require subshell)

.gitlab-ci.yml

@@ -71,7 +71,8 @@ local-install-debian-job:   # This job runs in the test stage.
     # run headless verapdf installation
     - "${VERAPDF_UNZIP_DIR}/verapdf-install" "${AUTO_INSTALL_XML_PATH}"
     # test call verapdf
-    - "${INSTALL_PATH_DEB}/verapdf" --version | grep "${VERAPDF_VERSION}"
+    # HINT: shell pipe requires subshell
+    - CALL_VERAPDF=$("${INSTALL_PATH_DEB}/verapdf" --version | grep "${VERAPDF_VERSION}")
 
 package-debian-job:
   stage: package
@@ -116,4 +117,5 @@ test-install-debian-job:
     - "docker"
   script:
     - apt install -y ./verapdf*.deb
-    - "${INSTALL_PATH_DEB}/verapdf" --version | grep "${VERAPDF_VERSION}"
+    # HINT: shell pipe requires subshell
+    - CALL_VERAPDF=$("${INSTALL_PATH_DEB}/verapdf" --version | grep "${VERAPDF_VERSION}")