git init

.gitignore

+## Editor
+.*.sw[op]
+*~
+
+## Ruby
+Gemfile.lock
+.ruby-*
+
+## modulesync
+/modules

Gemfile

+source 'https://rubygems.org'
+
+gem 'modulesync',
+    git: 'https://github.com/lazyfrosch/modulesync.git',
+    branch: 'feature/erb-metadata' # also see https://github.com/voxpupuli/modulesync/pull/168

config_defaults.yml

+---
+.gitlab-ci.yml:
+  deb:
+    debian:
+      title: Debian
+      releases:
+        buster:
+        stretch:
+    ubuntu:
+      title: Ubuntu
+      releases:
+        disco:
+        bionic:
+        xenial:
+  rpm:
+    centos:
+      repo: epel
+      title: EPEL
+      releases:
+        7:
+        6:
+    fedora:
+      title: Fedora
+      releases:
+        30:
+        29:
+    sles:
+      title: SLES
+      repo: SUSE
+      releases:
+        15.0:
+        12.4:
+    opensuse:
+      repo: openSUSE
+      title: openSUSE
+      releases:
+        15.0:

managed_modules.yml

+---
+- deb-icingaweb2-module-audit
+- deb-icingaweb2-module-businessprocess
+- deb-icingaweb2-module-cube
+- deb-icingaweb2-module-director
+- deb-icingaweb2-module-fileshipper
+- deb-icingaweb2-module-generictts
+- deb-icingaweb2-module-graphite
+- deb-icingaweb2-module-incubator
+- deb-icingaweb2-module-ipl
+- deb-icingaweb2-module-reactbundle
+- rpm-icingaweb2-module-audit
+- rpm-icingaweb2-module-businessprocess
+- rpm-icingaweb2-module-cube
+- rpm-icingaweb2-module-director
+- rpm-icingaweb2-module-fileshipper
+- rpm-icingaweb2-module-generictts
+- rpm-icingaweb2-module-graphite
+- rpm-icingaweb2-module-incubator
+- rpm-icingaweb2-module-ipl
+- rpm-icingaweb2-module-reactbundle

moduleroot/.gitlab-ci.yml.erb

+#########################
+# MANAGED BY MODULESYNC #
+#########################
+<%-
+  module_name = @metadata[:module_name]
+  if module_name =~ /^(\w+)-/
+    variant = $1
+    project_name = module_name.gsub(/^\w+-/, '')
+  else
+    raise 'Could not detect package variant'
+  end
+-%>
+
+stages:
+  - build
+  - test
+  - upload
+
+variables:
+  DOCKER_IMAGE_BASE: registry.icinga.com/build-docker
+
+.build: &build
+  stage: build
+  tags:
+    - docker
+  image: ${DOCKER_IMAGE_BASE}/${DOCKER_IMAGE}
+  script:
+    - icinga-build-package
+  cache:
+    key: "${CI_JOB_NAME}"
+    paths:
+      - ccache/
+      - '<%= project_name %>.git'
+  artifacts:
+    paths:
+      - build/*
+    expire_in: 1 week
+
+.test: &test
+  stage: test
+  tags:
+    - docker
+  image: ${DOCKER_IMAGE_BASE}/${DOCKER_IMAGE}
+  script:
+    - find build/
+    - icinga-build-test
+
+.upload: &upload
+  stage: upload
+  tags:
+    - docker
+  image: ${DOCKER_IMAGE_BASE}/upload
+  script:
+    - find build/
+    - icinga-build-upload-aptly
+  only:
+    - tags
+
+<% @configs[variant].each do |name, os_config| -%>
+###################################
+# <%= os_config['title'] ? os_config['title'] : name %>
+###################################
+<% os_config['releases'].each do |release, release_config| -%>
+<%
+  job_name = "#{name}/#{release}"
+  docker_image = "#{name}/#{release}"
+  if os_config['repo']
+    upload_job = os_config['repo'] + "/#{release}"
+  else
+    upload_job = job_name
+  end
+-%>
+
+build/<%= job_name %>:
+  <<: *build
+  variables:
+    DOCKER_IMAGE: <%= docker_image %>
+
+test/<%= job_name %>:
+  <<: *test
+  variables:
+    DOCKER_IMAGE: <%= docker_image %>
+  dependencies:
+    - build/<%= job_name %>
+
+upload/<%= upload_job %>:
+  <<: *upload
+  dependencies:
+    - build/<%= job_name %>
+<% end -%>
+<% end -%>

modulesync.yml

+---
+git_base: 'git@git.icinga.com:'
+namespace: packaging
+branch: modulesync
+message: "Update from Icinga packaging modulesync_modules"
+...
+# vim: syntax=yaml