[gnome-shell-extensions] ci: Use junit output format

[Florian Müllner <fmuellner src gnome org>]

commit ba55bacab42aa48c60412a32f9f1326585e80452
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Nov 7 01:52:42 2020 +0100

    ci: Use junit output format
    
    Gitlab has built-in support for junit reports, so switch eslint's
    output to that format.
    
    https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/136

 .gitlab-ci.yml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e83c1ed..fcd0fbc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ stages:
  - build
 
 variables:
- LINT_LOG: "eslint-report.txt"
+ LINT_LOG: "eslint-report.xml"
  JS_LOG: "js-report.txt"
 
 .only_default: &only_default
@@ -36,12 +36,13 @@ js_check:
 eslint:
   stage: review
   script:
-    - eslint -o $LINT_LOG extensions --no-color || { cat $LINT_LOG; false; }
+    - eslint -o $LINT_LOG -f junit extensions
   <<: *only_default
   artifacts:
     paths:
       - ${LINT_LOG}
-    when: on_failure
+    reports:
+      junit: ${LINT_LOG}
 
 build-bundles:
   stage: build