add config for link checker

Author: breedx-splk

.github/workflows/reusable-markdown-link-check.yml

@@ -14,10 +14,7 @@ jobs:
 
       - uses: lycheeverse/lychee-action@82202e5e9c2f4ef1a55a3d02563e1cb6041e5332 # v2.4.1
         with:
-          # excluding links to pull requests and issues is done for performance
           args: >
-            --include-fragments
-            --exclude "^https://github.com/open-telemetry/opentelemetry-java-contrib/(issues|pull)/\\d+$"
-            --max-retries 6
-            --max-concurrency 1
+            --config ./lychee.toml
+            --github-token ${{ github.token }}
             .

lychee.toml

@@ -0,0 +1,19 @@
+timeout = 30
+retry_wait_time = 5
+max_retries = 6
+max_concurrency = 1
+
+# Stealth
+user_agent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0"
+
+# Check fragments in links
+include_fragments = true
+
+# excluding links to pull requests and issues is done for performance
+# sonatype snapshots are currrently unbrowseable
+exclude = [
+  "^https://github.com/open-telemetry/opentelemetry-java-contrib/(issues|pull)/\\d+$",
+  '^https://central.sonatype.com/service/rest/repository/browse/maven-snapshots/io/opentelemetry/contrib/$',
+]
+
+