Add support for link checking and run it on CI

Author: Kobzol

.github/workflows/deploy.yml

@@ -16,8 +16,6 @@ jobs:
       - uses: actions/checkout@v4
       - name: Install mdbook
         run: 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
-      - name: Check blacksmith format
-        run: cargo fmt --check --manifest-path=blacksmith/Cargo.toml
       - name: Build book
         run: ./mdbook build
       - name: Upload artifact

.github/workflows/test.yml

@@ -0,0 +1,20 @@
+name: Test
+on:
+  pull_request:
+
+jobs:
+  test:
+    name: CI
+    runs-on: ubuntu-latest
+    env:
+      MDBOOK_VERSION: 0.4.51
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install mdbook
+        run: 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
+      - name: Install mdbook-linkcheck
+        run: cargo install mdbook-linkcheck@0.7.7 --locked
+      - name: Check blacksmith format
+        run: cargo fmt --check --manifest-path=blacksmith/Cargo.toml
+      - name: Build book
+        run: ./mdbook build

book.toml

@@ -61,3 +61,7 @@ smart-punctuation = true
 "platforms/zulip/triagebot.html" = "/triagebot/index.html"
 "core/blogs.html" = "/platforms/blogs.html"
 "core/index.html" = "/governance/council.html"
+
+[output.linkcheck]
+follow-web-links = false
+optional = true