ci: deploy dashy on froggit pages

.gitlab-ci.yml

+stages:
+  - 📝 publish
+  - 🧽 clean
+
+variables:
+  SUB_GROUP: "poc"
+  BASE_URL: "/"
+
+pages:
+  image: lissy93/dashy:2.1.1
+  stage: 📝 publish
+  script:
+    - cp src/* /app/public/
+    - cd /app
+    - yarn build
+    - mv /app/dist/ ${CI_PROJECT_DIR}/public
+  artifacts:
+    paths:
+      - public
+  rules:
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+  environment:
+    name: production
+    url: "https://froggit.page/"
+
+pages:preview:
+  extends: pages
+  artifacts:
+    expire_in: 1 week
+  variables:
+    BASE_URL: "/-/${SUB_GROUP}/${CI_PROJECT_NAME}/-/jobs/${CI_JOB_ID}/artifacts/public"
+  rules:
+    - if: $CI_MERGE_REQUEST_IID
+  environment:
+    name: preview/${CI_COMMIT_REF_NAME}
+    url: "https://${CI_PROJECT_ROOT_NAMESPACE}.${CI_PAGES_DOMAIN}/-/${SUB_GROUP}/${CI_PROJECT_NAME}/-/jobs/${CI_JOB_ID}/artifacts/public/index.html"
+    on_stop: pages:preview:stop
+
+pages:preview:stop:
+  stage: 🧽 clean
+  rules:
+    - if: $CI_MERGE_REQUEST_IID
+      when: manual
+  allow_failure: true
+  environment:
+    name: preview/${CI_COMMIT_REF_NAME}
+    action: stop
+  script:
+    - echo "🧽 clean MR environment [preview/${CI_COMMIT_REF_NAME}]"