[librsvg-oci-images] gitlabci: Make sure project_namespace is alwasy lowercase.

[Jordan Petridis <jpetridis src gnome org>]

commit 163e7892ef76862967e60b7f990aeb2777b65965
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Thu May 17 14:55:20 2018 +0300

    gitlabci: Make sure project_namespace is alwasy lowercase.

 .gitlab-ci.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 74c327b..25adb83 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -23,7 +23,8 @@ stages:
 .distro_template: &distro_build
     stage: distro
     before_script:
-        - export 
IMAGE=${CI_REGISTRY}/${CI_PROJECT_NAMESPACE}/${CI_PROJECT_NAME}/${ARCH}/${DISTRO_NAME}:${DISTRO_VER}
+        - export NAMESPACE="$(echo "${CI_PROJECT_NAMESPACE}" | tr A-Z a-z)"
+        - export IMAGE=${CI_REGISTRY}/${NAMESPACE}/${CI_PROJECT_NAME}/${ARCH}/${DISTRO_NAME}:${DISTRO_VER}
     <<: *base_build
     allow_failure: true