Make work in CI

.gitlab-ci.yml

+stages:
+  - build
+
+build-doc:
+  stage: build
+  image: ubuntu:20.04
+  script:
+    - curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -
+    - apt install -y nodejs
+    - npm install --global yarn
+    - yarn install
+    - yarn build
\ No newline at end of file

package.json

 {
   "scripts": {
     "build": "yarn generate:defs && yarn generate:meta && yarn generate:markdown",
-    "generate:metadata": "curl -H \"Content-Type: application/json\" -d '{\"id\":\"1\", \"jsonrpc\":\"2.0\", \"method\": \"state_getMetadata\", \"params\":[]}' http://test.xxlabs.net > ./metadata.json",
+    "generate:metadata": "curl -H \"Content-Type: application/json\" -d '{\"id\":\"1\", \"jsonrpc\":\"2.0\", \"method\": \"state_getMetadata\", \"params\":[]}' http://host.docker.internal:9933 > ./metadata.json",
     "generate:defs": "ts-node --skip-project node_modules/.bin/polkadot-types-from-defs --package sample-polkadotjs-typegen/interfaces --input ./src/interfaces --endpoint \"wss://test.xxlabs.net\"",
     "generate:meta": "ts-node --skip-project node_modules/.bin/polkadot-types-from-chain --package sample-polkadotjs-typegen/interfaces --endpoint \"wss://test.xxlabs.net\" --output ./src/interfaces",
     "generate:typeshack": "echo \"export const oiwhriubrgvibu = false;\" > src/interfaces/types.ts",