CI: Fix install hints

The files haven't been found due to changed current directory. Fixed the search path.

.gitlab-ci-build.yml

@@ -32,18 +32,18 @@ variables:
 
 .dump_install_command: &dump_install_command
   # print install instructions
-  - |-
+  - |- 
     for i in ${INSTALLSCRIPTS};do
-    if [[ -f "${BUILDPATH}/${IMAGEPATH}/${i}" ]]; then
-    cat <<-EOF
+    SCRIPT="${CI_PROJECT_DIR}/${BUILDPATH}/${IMAGEPATH}/${i}"
+    if [[ -f "${SCRIPT}" ]]; then
+      cat <<-EOF
     ==============================
-          Install the image:
+        Install the image:
 
     export GITLAB_TOKEN=<your_access_token>
     FNG="${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/jobs/${CI_JOB_ID}/artifacts/${BUILDPATH}/${IMAGEPATH}/${i}"
     curl --location --header "PRIVATE-TOKEN: \$GITLAB_TOKEN" "\$FNG" | sh -s -- --url="\$(dirname "\$FNG")"
     ==============================
-
     EOF
     fi
     done