[gobject-introspection] Update the CI image

[Emmanuele Bassi <ebassi src gnome org>]

commit 292038469a22b6bbb2fab743885631c23de3dfba
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon May 7 14:11:26 2018 +0100

    Update the CI image
    
    We should use the GitLab registry, to allow everyone with the
    appropriate credentials for gitlab.gnome.org to push images for
    CI.

 .gitlab-ci.yml        | 7 +++----
 .gitlab-ci/Dockerfile | 2 +-
 2 files changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 43e2d4d5..9bdbc7ae 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,10 +1,9 @@
-image: ebassi/gitlab-gi:latest
-
 stages:
   - build
 
-build-job:
+fedora-x86_64:
   stage: build
+  image: registry.gitlab.gnome.org/gnome/gobject-introspection:v1
   script:
     - meson --prefix /usr --libdir /usr/lib64 --buildtype debug -Dcairo=true _build .
     - cd _build
@@ -14,6 +13,6 @@ build-job:
     - tags
   artifacts:
     when: on_failure
-    name: "glib-_${CI_COMMIT_REF_NAME}"
+    name: "gi-_${CI_COMMIT_REF_NAME}"
     paths:
       - "${CI_PROJECT_DIR}/_build/meson-logs"
diff --git a/.gitlab-ci/Dockerfile b/.gitlab-ci/Dockerfile
index 8691c0be..5a7a9815 100644
--- a/.gitlab-ci/Dockerfile
+++ b/.gitlab-ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:27
+FROM fedora:28
 
 RUN dnf -y install \
     bison \