run github action weekly rather than on push

.github/workflows/action.yml

@@ -1,20 +1,20 @@
-name: Check Markdown links
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
+name: Markdown Links Check
+# runs every monday at 9 am
 on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
+  schedule:
+    - cron: "0 9 * * 1"
 
 jobs:
-  markdown-link-check:
+  check-links:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@master
-    - uses: gaurav-nelson/github-action-markdown-link-check@v1
+      - uses: actions/checkout@master
+      - uses: gaurav-nelson/github-action-markdown-link-check@v1
+        # checks all markdown files from root but ignores subfolders
+        with:
+          use-quiet-mode: 'yes'
+          use-verbose-mode: 'yes'
+          config-file: '.github/workflows/markdown.links.config.json'
+          max-depth: 0
+          file-path: README.md
+

.github/workflows/markdown.links.config.json

@@ -0,0 +1,10 @@
+{
+  "ignorePatterns": [
+    {
+      "pattern": "^http://www.tmeter.ru"
+    },
+    {
+      "pattern": "https://github.com/GoogleChrome/lighthouse/workflows/\uD83D\uDCA1\uD83C\uDFE0/badge.svg"
+    }
+  ]
+}