Install curl and publish artifacts for the deploy phase

.gitlab-ci.yml

@@ -92,13 +92,20 @@ build:documentation:
     name: "knot-dns-$CI_BUILD_TAG-doc"
     paths:
       - doc/_build/
+    expire_in: '1 hour'
 
 deploy:documentation:
   <<: *debian_stretch
   stage: deploy
+  before_script:
+    - apt-get -y install curl
   only:
     - gitlab-ci-documentation
     - tags
     - triggers
   script:
     - "curl --request POST --form token=$WEBSITE_TOKEN --form ref=master --form \"variables[RELEASE_CI_BUILD_TAG]=$CI_BUILD_TAG\" --form \"variables[RELEASE_CI_BUILD_ID]=$CI_BUILD_ID\" https://gitlab.labs.nic.cz/api/v3/projects/5/trigger/builds"
+  artifacts:
+    name: "knot-dns-$CI_BUILD_TAG-doc"
+    paths:
+      - doc/_build/