[nautilus] CI: Use apt-get on Ubuntu

[Ernestas Kulik <ernestask src gnome org>]

commit e94894fef6e6edfca492db95e86e65b2d7e65557
Author: Ernestas Kulik <ernestas kulik gmail com>
Date:   Tue Jul 10 15:49:47 2018 +0000

    CI: Use apt-get on Ubuntu
    
    Invoking `apt` triggers a warning about its interface being not stable enough for use in headless setups. 
That, and I messed up the last commit, so here we are.

 .gitlab-ci.yml | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3cbdda723..e6e8f2ce2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -88,15 +88,14 @@ ubuntu:devel:
     stage: cross_environment
     before_script:
         # Ubuntu requires running update to fetch metadata and find packges
-        - apt update
-        - apt-get 
-        - apt install -y gcc meson gettext itstool git libgtk-3-dev
-                         libgnome-autoar-0-dev
-                         gobject-introspection libxml2-dev
-                         libtracker-control-2.0-dev desktop-file-utils libgexiv2-dev
-                         libtracker-sparql-2.0-dev
-                         libgirepository1.0-dev gsettings-desktop-schemas-dev
-                         libseccomp-dev
+        - apt-get update
+        - apt-get install -y gcc meson gettext itstool git libgtk-3-dev
+                             libgnome-autoar-0-dev
+                             gobject-introspection libxml2-dev
+                             libtracker-control-2.0-dev desktop-file-utils libgexiv2-dev
+                             libtracker-sparql-2.0-dev
+                             libgirepository1.0-dev gsettings-desktop-schemas-dev
+                             libseccomp-dev
     <<: *distro_test
     only:
         - schedules