chore: Switch markdown-link-check build to GitHub Actions

Author: nschonni

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

@@ -0,0 +1,19 @@
+name: Check Markdown links
+
+on:
+  pull_request:
+    paths:
+      - "**/*.md"
+
+jobs:
+  markdown-link-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '12.x'
+      - name: Install markdown-link-check
+        run: npm i -g markdown-link-check
+      - name: Run markdown-link-check on MD files
+        run: find . -name "*.md" | xargs -n 1 markdown-link-check -q

.travis.yml

@@ -40,23 +40,8 @@ stages:
 
 jobs:
   fast_finish: true
-  allow_failures:
-    - env:
-        - TEST=mardown_lint
 
   include:
-    - stage: Test
-      name: Markdown link check
-      env:
-        - TEST=mardown_lint
-      language: node_js
-      node_js:
-        - lts/*
-      install:
-        - npm i -g markdown-link-check
-      script:
-        - find . -name "*.md" | xargs -n 1 markdown-link-check
-
     - stage: Test
       name: .travis.yml and travis.yml.template consistency
       script:

travis.yml.template

@@ -38,23 +38,8 @@ stages:
 
 jobs:
   fast_finish: true
-  allow_failures:
-    - env:
-        - TEST=mardown_lint
 
   include:
-    - stage: Test
-      name: Markdown link check
-      env:
-        - TEST=mardown_lint
-      language: node_js
-      node_js:
-        - lts/*
-      install:
-        - npm i -g markdown-link-check
-      script:
-        - find . -name "*.md" | xargs -n 1 markdown-link-check
-
     - stage: Test
       name: .travis.yml and travis.yml.template consistency
       script: