feat(ci): Add new CI job for building & validating the OpenAPI spec

Signed-off-by: Steffen Vogel <[email protected]>

Author: stv0g

.gitlab-ci.yml

@@ -132,6 +132,16 @@ build:nix:
       --print-build-logs
       ".#villas-node-${SYSTEM}"
 
+build:openapi:
+  stage: build
+  needs: []
+  image: node:24-alpine
+  script:
+    - npx -y @redocly/cli build-docs docs/openapi/openapi.yaml --output openapi.html
+  artifacts:
+    paths:
+      - openapi.html
+
 # Stage: test
 
 test:pre-commit: