add CI

.gitlab-ci.yml

+image: python:3-buster
+
+variables:
+  SITE_NAME: prukazy.pirati.cz
+  ARTIFACTS_PATH: public
+  WEBHOOK_URL: https://ha-web.pirati.cz
+
+build:
+  stage: build
+  script:
+    - mkdir public
+    - cp -r content/* public/
+  after_script:
+    - echo "{\"name\":\"$SITE_NAME\" }" > request.json
+    - "curl -H 'Content-Type: application/json' -X POST -d @request.json $WEBHOOK_URL"
+  artifacts:
+    expire_in: 30 min
+    paths:
+     - $ARTIFACTS_PATH