gitlab: add a weekly container building job

This will hopefully catch containers that break because of upstream
changes as well as keep the container cache fresh.

As we have all the container jobs as dependants we tweaks the
container template to allow scheduled runs. Because we added a new
rules stanza we also need to make sure we catch the normal runs as
well.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20251117115523.3993105-19-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

.gitlab-ci.d/container-template.yml

@@ -19,3 +19,8 @@
     - docker push "$TAG"
   after_script:
     - docker logout
+  rules:
+    # because we want to enable this for scheduled runs we also have to replicate the normal rules
+    - if: '$CI_PIPELINE_SOURCE == "schedule"'
+    - if: '$CI_PROJECT_NAMESPACE == $QEMU_CI_UPSTREAM && $CI_COMMIT_BRANCH =~ /^staging/'
+    - if: '$QEMU_CI && $CI_PROJECT_NAMESPACE != $QEMU_CI_UPSTREAM'

.gitlab-ci.d/containers.yml

@@ -33,3 +33,42 @@ amd64-fedora-rust-nightly-container:
   variables:
     NAME: fedora-rust-nightly
   allow_failure: true
+
+# this scheduled job will trigger all the containers to build
+weekly-container-builds:
+  extends: .container_job_template
+  allow_failure: true
+  needs:
+    # core
+    - amd64-centos9-container
+    - amd64-fedora-container
+    # cross
+    - amd64-debian-cross-container
+    - amd64-debian-user-cross-container
+    - amd64-debian-legacy-cross-container
+    - arm64-debian-cross-container
+    - armhf-debian-cross-container
+    - hexagon-cross-container
+    - loongarch-debian-cross-container
+    - i686-debian-cross-container
+    - mips64el-debian-cross-container
+    - ppc64el-debian-cross-container
+    - riscv64-debian-cross-container
+    - s390x-debian-cross-container
+    - tricore-debian-cross-container
+    - xtensa-debian-cross-container
+    - win64-fedora-cross-container
+    - wasm-emsdk-cross-container
+    # containers
+    - amd64-alpine-container
+    - amd64-debian-container
+    - amd64-ubuntu2204-container
+    - amd64-opensuse-leap-container
+    - python-container
+    - amd64-fedora-rust-nightly-container
+  script:
+    - apk -U add make bash skopeo
+    - make docker-verify V=1 DOCKER_DEFAULT_REGISTRY=$CI_REGISTRY_IMAGE
+  rules:
+    # this only ever runes as a scheduled build
+    - if: '$CI_PIPELINE_SOURCE == "schedule"'