ci: use new CI/CD components

closes #12

.gitlab-ci.yml

+variables:
+  BASE_BRANCH: "el8"
+
 include:
-  # include the cicd project to auto-configure 'build',
-  # 'container_scanning', and 'push:*' jobs, and the
-  # '.trigger' job template
-  - project: docker/cicd
-    file: 'IGWN-Docker.gitlab-ci.yml'
+  # configure build/scan/push jobs
+  - component: git.ligo.org/computing/gitlab/components/docker/all@1
     inputs:
-      # the name of the (upstream) project
-      project-path: docker/base
-      # the name of the image on external registries
-      docker-io-repository: igwn/base
-      quay-io-repository: igwn/base
-
-# add a test job
-test:
-  image: "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG"
-  script:
-    - dnf search lalsuite
-
-# -- trigger rebuilds of downstream pipelines
-
-# builder
-
-trigger:builder:
-  extends: .trigger
-  trigger:
-    project: docker/builder
-
-# koji
-
-trigger:koji:
-  extends: .trigger
-  trigger:
-    project: docker/koji-client
-    branch: el8
-
-# lalsuite-dev
-
-trigger:lalsuite-dev:
-  extends: .trigger
-  trigger:
-    project: docker/lalsuite-dev
-
-# packaging
-
-trigger:el8-production:
-  extends: .trigger
-  trigger:
-    project: docker/packaging
-    branch: el8-production
-
-trigger:el8-production-staging:
-  extends: .trigger
-  trigger:
-    project: docker/packaging
-    branch: el8-production-staging
-
-trigger:el8-testing:
-  extends: .trigger
-  trigger:
-    project: docker/packaging
-    branch: el8-testing
-
-trigger:el8-staging:
-  extends: .trigger
-  trigger:
-    project: docker/packaging
-    branch: el8-staging
-
-trigger:el8-resync:
-  extends: .trigger
-  trigger:
-    project: docker/packaging
-    branch: el8-resync
-
-trigger:el8-resync-testing:
-  extends: .trigger
-  trigger:
-    project: docker/packaging
-    branch: el8-resync-testing
-
-trigger:el8-resync-staging:
-  extends: .trigger
-  trigger:
-    project: docker/packaging
-    branch: el8-resync-staging
-
-trigger:el8-development:
-  extends: .trigger
-  trigger:
+      # path of main project
+      upstream_project_path: docker/base
+      # compare container_scanning results of new images to this one
+      default_image_name: "docker/base:${BASE_BRANCH}"
+      # run these commands to test the image
+      test_script:
+        - dnf info lalsuite
+      # this project deploys all branches of the main project
+      deploy_when: all
+      # remote registry repositories:
+      docker_io_repository: igwn/base
+      quay_io_repository: igwn/base
+      # trigger rebuilds of the same branch in other projects
+      trigger_projects:
+        - docker/builder
+        - docker/koji-client
+        - docker/lalsuite-dev
+      # see docker_trigger_packaging below for custom triggers
+
+# -- extra triggers for docker/packaging branches
+
+docker_trigger_packaging:
+  extends: docker_trigger
+  parallel:
+    matrix:
+      - BRANCH:
+          - ${BASE_BRANCH}-development
+          - ${BASE_BRANCH}-production
+          - ${BASE_BRANCH}-production-staging
+          - ${BASE_BRANCH}-resync
+          - ${BASE_BRANCH}-resync-staging
+          - ${BASE_BRANCH}-resync-testing
+          - ${BASE_BRANCH}-staging
+          - ${BASE_BRANCH}-testing
+  trigger:
+    branch: $BRANCH
     project: docker/packaging
-    branch: el8-development