make deploy hook into variable

.gitlab-ci.yml

@@ -36,4 +36,4 @@ deploy:
   before_script:
     - apk add --update curl && rm -rf /var/cache/apk/*
   script:
-    - curl -k -X POST https://portainer.intranet.pirati.cz/api/webhooks/5af05c61-4435-40b5-9afe-0a7906743238
+    - curl -k -X POST $DEPLOY_HOOK