add documentation generation to CI

.gitlab-ci.yml

@@ -3,7 +3,7 @@ image: bitsmart/rust:1.32
 stages:
   - lint
   - build
-  - test
+  - doc
 
 lint:
   stage: lint
@@ -28,7 +28,7 @@ build:
     - cargo build --verbose --features backend_piston,backend_gilrs
 
 test:
-  stage: test
+  stage: build
   cache:
     key: artifacts
     paths:
@@ -37,3 +37,20 @@ test:
     policy: pull
   script:
     - cargo test --features backend_piston,backend_gilrs
+
+doc:
+  stage: doc
+  cache:
+    key: artifacts
+    paths:
+      - target
+      - Cargo.lock
+    policy: pull
+  script:
+    - cargo doc --features backend_piston,backend_gilrs
+    - mv target/doc/prongs/ public/
+  artifacts:
+    path:
+      - public
+  only:
+    - master