[RFC PATCH] gitlab: add special rule for the hexagon container

["Alex Bennée" <alex.bennee@linaro.org>]

The hexagon container is always manually built but of course not
everyone will be building it themselves and pushing to their
registries. We still need to create a "local" registry copy for the
actual gitlab tests to run. We don't build it in this case, just pull
it across from the upstream registry. We disable this rule from
running on the qemu-project itself so it doesn't accidentally wipe out
our master copy.

Fixes: 910c40ee94 ("gitlab: add build-user-hexagon test")
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Cornelia Huck <cohuck@redhat.com>
---
 .gitlab-ci.d/containers.yml | 27 +++++++++++++++++++++++++++
 .gitlab-ci.yml              |  2 ++
 2 files changed, 29 insertions(+)

diff --git a/.gitlab-ci.d/containers.yml b/.gitlab-ci.d/containers.yml
index 3fb3c14f06..088c7e68c3 100644
--- a/.gitlab-ci.d/containers.yml
+++ b/.gitlab-ci.d/containers.yml
@@ -101,6 +101,33 @@ armhf-debian-cross-container:
   variables:
     NAME: debian-armhf-cross
 
+# We never want to build hexagon in the CI system and by default we
+# always want to refer to the master registry where it lives.
+hexagon-cross-container:
+  image: docker:stable
+  stage: containers
+  except:
+    variables:
+      - $CI_PROJECT_NAMESPACE == 'qemu-project'
+  variables:
+    NAME: debian-hexagon-cross
+    GIT_DEPTH: 1
+  services:
+    - docker:dind
+  before_script:
+    - export TAG="$CI_REGISTRY_IMAGE/qemu/$NAME:latest"
+    - export COMMON_TAG="$CI_REGISTRY/qemu-project/qemu/qemu/$NAME:latest"
+    - docker info
+    - docker login $CI_REGISTRY -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD"
+  script:
+    - echo "TAG:$TAG"
+    - echo "COMMON_TAG:$COMMON_TAG"
+    - docker pull $COMMON_TAG
+    - docker tag $COMMON_TAG $TAG
+    - docker push "$TAG"
+  after_script:
+    - docker logout
+
 hppa-debian-cross-container:
   extends: .container_job_template
   stage: containers-layer2
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f718b61fa7..a04cca9db0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -421,6 +421,8 @@ build-user-static:
 # declared. The image is manually uploaded.
 build-user-hexagon:
   extends: .native_build_job_template
+  needs:
+    hob: hexagon-cross-container
   variables:
     IMAGE: debian-hexagon-cross
     TARGETS: hexagon-linux-user
-- 
2.20.1