[gimp/barthalion/update-kaniko] gitlab-ci: Set container to docker explicitly

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 46f9137af39ff4380292f718cc9e087f92f2a71a
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Sat Mar 12 20:53:56 2022 +0100

    gitlab-ci: Set container to docker explicitly
    
    Kaniko seems to misdetect the container runtime it's running within.

 .gitlab-ci.yml | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 555cd1dfb6..2e5f74c603 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -62,10 +62,13 @@ build-image:
   stage: prepare
   variables:
     GIT_STRATEGY: none
+    container: docker
   cache: {}
   image:
     name: gcr.io/kaniko-project/executor:debug
     entrypoint: [""]
+  environment:
+    container
   script:
     - mkdir -p /kaniko/.docker
     - echo 
"{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" 
> /kaniko/.docker/config.json
@@ -89,6 +92,7 @@ build-image-win64:
   stage: prepare
   variables:
     GIT_STRATEGY: none
+    container: docker
   cache: {}
   image:
     name: gcr.io/kaniko-project/executor:debug
@@ -111,6 +115,7 @@ build-image-win32:
   stage: prepare
   variables:
     GIT_STRATEGY: none
+    container: docker
   cache: {}
   image:
     name: gcr.io/kaniko-project/executor:debug