Use rustup

Author: nunoplopes

.github/workflows/docs.yml

@@ -10,23 +10,13 @@ permissions:
   pages: write
   id-token: write
 
-concurrency:
-  group: pages
-  cancel-in-progress: false
-
 jobs:
   build:
     runs-on: ubuntu-latest
-    env:
-      MDBOOK_VERSION: 0.5.4
     steps:
       - uses: actions/checkout@v4
       - name: Install mdbook
-        run: |
-          mkdir -p "$HOME/.local/bin"
-          curl -sSL "https://github.com/rust-lang/mdBook/releases/download/v${MDBOOK_VERSION}/mdbook-v${MDBOOK_VERSION}-x86_64-unknown-linux-gnu.tar.gz" \
-            | tar -xz -C "$HOME/.local/bin"
-          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+        run: cargo install mdbook
       - name: Build book
         run: mdbook build docs
       - uses: actions/upload-pages-artifact@v3