Added CI configuration

.gitlab-ci.yml

+stages:
+  - test
+  - deploy
+
+
+pages:
+  stage: test
+  image: node:latest
+  before_script:
+    - yarn install
+  script:
+    - yarn test:unit
+  cache:
+    key: front_node_modules
+    paths:
+      - "node_modules"
+
+pages:
+  stage: deploy
+  image: node:latest
+  before_script:
+    - yarn install
+  script:
+    - yarn build
+    - rm -rf public
+    - mv dist public
+    # ugly hack from https://gitlab.com/gitlab-org/gitlab-pages/issues/23#note_57499396
+    # until Gitlab Pages has better support for SPA
+    - cp public/index.html public/404.html
+    # Gzip compression, cf https://webd97.de/post/gitlab-pages-compression/
+    - gzip -k -6 $(find public -type f)
+  cache:
+    key: front_node_modules
+    paths:
+      - "node_modules"
+  artifacts:
+    paths:
+      - public/
+  only:
+    - master@retribute.me/webclient
+  tags:
+    - docker