[tracker/tracker-2.3] ci: Avoid usage of `su` command

[Carlos Garnacho <carlosg src gnome org>]

commit 340634d88a90bdf0e4d01ba50b9a639d8fa659af
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Dec 10 13:09:31 2020 +0100

    ci: Avoid usage of `su` command
    
    Adapt to https://gitlab.gnome.org/GNOME/tracker-oci-images/-/merge_requests/28.
    We no longer can (nor need to, really) switch users with `su`. Drop these
    calls, and account for the changes of $CWD in the course of the issued commands.

 .gitlab-ci.yml | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index abe12c45a..951db8f94 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,15 +18,16 @@ stages:
   stage: test
 
   script:
-    - su tracker -c 'mkdir build'
-    - su tracker -c 'cd build; meson .. -Db_lto=true'
-    - su tracker -c 'cd build; ninja'
+    - mkdir build
+    - cd build
+    - meson .. -Db_lto=true
+    - ninja
     - |
       # Remove the many "CI_" variables from the environment. Meson dumps the
       # whole environment for every failed test, and that gives a whole
       # screenful of junk each time unless we strip these.
       unset $(env|grep -o '^CI_[^=]*')
-      su tracker -c 'cd build; env LANG=C.UTF-8 LC_ALL=C.UTF-8 eatmydata meson test --print-errorlogs 
${MESON_TEST_EXTRA_ARGS}'
+      env LANG=C.UTF-8 LC_ALL=C.UTF-8 eatmydata meson test --print-errorlogs ${MESON_TEST_EXTRA_ARGS}
 
   after_script:
     - |