[gtk/ci-release] ci: Add a release build job

[Emmanuele Bassi <ebassi src gnome org>]

commit 37bd91bfa48044c275b1756ec46c41ae56597c0a
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Jan 14 14:56:03 2020 +0000

    ci: Add a release build job
    
    The release buildtype disables various code paths, and thus should be
    tested to ensure we don't accidentally rely on side effects of debugging
    code.

 .gitlab-ci.yml | 29 +++++++++++++++++++++++------
 1 file changed, 23 insertions(+), 6 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 84d250a1b1..6e40e73c0a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,11 +12,7 @@ stages:
     - subprojects/libepoxy/
     - subprojects/pango/
 
-fedora-x86_64: &fedora-x86_64-defaults
-  image: registry.gitlab.gnome.org/gnome/gtk/master:v8
-  stage: build
-  script:
-    - bash -x ./.gitlab-ci/test-docker.sh
+.build-artifacts:
   artifacts:
     when: always
     reports:
@@ -29,14 +25,35 @@ fedora-x86_64: &fedora-x86_64-defaults
       - "${CI_PROJECT_DIR}/_build/report.html"
       - "${CI_PROJECT_DIR}/_build/testsuite/reftests/output/*.png"
       - "${CI_PROJECT_DIR}/_build/testsuite/gsk/compare/*/*.png"
+
+.fedora-build-defaults: &fedora-build-defaults
+  image: registry.gitlab.gnome.org/gnome/gtk/master:v8
+  stage: build
+  script:
+    - bash -x ./.gitlab-ci/test-docker.sh
+  extends: .build-artifacts
+
+fedora-x86_64:
+  <<: *fedora-build-defaults
+  extends: .build-artifacts
   cache:
     key: "$CI_JOB_NAME"
     <<: *cache-paths
 
 fedora-x86_64-staticlibs:
+  <<: *fedora-build-defaults
   variables:
     EXTRA_MESON_FLAGS: "-Ddefault_library=both"
-  <<: *fedora-x86_64-defaults
+  cache:
+    key: "$CI_JOB_NAME"
+    <<: *cache-paths
+
+# Uncached release build
+fedora-x86_64-release:
+  <<: *fedora-build-defaults
+  allow_failure: true
+  variables:
+    EXTRA_MESON_FLAGS: "-Dbuildtype=release"
 
 .mingw-defaults: &mingw-defaults
   stage: build