[PATCH 2/2] gitlab: Add key to the jobs ccache cache config.

[Rémi Bernon]

From: Rémi Bernon

To avoid jobs with different compilers overwriting each other.

As this will cause a different key to be used between build-daily-linux
and the MR jobs, also add $CI_MERGE_REQUEST_DIFF_BASE_SHA to the key to
try sharing caches across MR with the same base commit.
---
 tools/gitlab/build.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/gitlab/build.yml b/tools/gitlab/build.yml
index 9e5ce467e96..f5c0e39ccbe 100644
--- a/tools/gitlab/build.yml
+++ b/tools/gitlab/build.yml
@@ -7,7 +7,8 @@
   variables:
     GIT_DEPTH: 0
   cache:
-    - paths:
+    - key: $CI_JOB_NAME-ccache-$CI_MERGE_REQUEST_DIFF_BASE_SHA
+      paths:
         - ccache/
     - key:
         files: