try to publish doc via gitlab pages

.gitlab-ci.yml

 stages:
     - build_and_tests
-    - clippy
     - fmt
+    - clippy
     - publish
     
 before_script:
@@ -37,28 +37,28 @@ build_and_tests:nightly:
   when: manual
   allow_failure: true
   
-clippy:
-  stage: clippy
+fmt:
+  stage: fmt
   image: rustlang/rust:nightly
   tags:
     - redshift-rs-nightly
   before_script:
     - export PATH="$HOME/.cargo/bin:$PATH"
-    - cargo install --force clippy --verbose
+    - cargo install --force rustfmt-nightly
   script:
-    - cargo clippy --all -- -D warnings --verbose
+    - cargo fmt -- --check
   allow_failure: true
 
-fmt:
-  stage: fmt
+clippy:
+  stage: clippy
   image: rustlang/rust:nightly
   tags:
     - redshift-rs-nightly
   before_script:
     - export PATH="$HOME/.cargo/bin:$PATH"
-    - cargo install --force rustfmt-nightly
+    - cargo install --force clippy --verbose
   script:
-    - cargo fmt -- --check
+    - cargo clippy --all -- -D warnings --verbose
   allow_failure: true  
 
 publish:crate:
@@ -74,3 +74,20 @@ publish:crate:
     - tags
   allow_failure: false
   when: manual
+
+pages:
+  stage: publish
+  tags:
+    - redshift-rs-stable
+  before_script:
+    - export PATH="$HOME/.cargo/bin:$PATH"
+  script:
+    - cargo doc
+    - mv target/doc public
+    - ls public
+  artifacts:
+    untracked: true
+    paths:
+      - public
+  allow_failure: true
+  when: manual
\ No newline at end of file