Skip workflow action for specific files - github

Question

My current GitHub workflow executes test cases even for .md file or .txt file.
I want to skip the test for any changes made to documentation files. My folder structure is:
project
| source-codes
│ docs
│ file001.txt
| file.rst
| file.md
The GitHub workflow must skip for docs folder or anything with .rst or .md file.
I have the code below but doesn't seem to work. I am currently trying this from my feature branch.
.github/workflows/main.yml
# This is a basic workflow to help you get started with Actions
name: Documentation Test
# Controls when the workflow will run
on:
# Triggers the workflow on push or pull request events but only for the "main" branch
push:
branches:
- 'main'
# Allows you to run this workflow manually from the Actions tab
# workflow_dispatch:
# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
# This workflow contains a single job called "Documentation Testcase"
documentation_testcase:
# The type of runner that the job will run on
name: Documentation Job
runs-on: ubuntu-latest
# Steps represent a sequence of tasks that will be executed as part of the job
steps:
# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
- name: Checkout
uses: actions/checkout#v3
with:
# Checkout as many commits as needed for the diff
fetch-depth: 2
- shell: pwsh
# Give an id to the step, so we can reference it later.
id: check_file_changed
run: |
# Diff HEAD with the previous commit
$diff = git diff --name-only HEAD^ HEAD
# Check if a file under docs/ or with the .md extension has changed (added, modified, deleted)
$SourceDiff = $diff | Where-Object { $_ -match '^docs/' -or $_ -match '.rst$' }
$HasDiff = $SourceDiff.Length -gt 0
# Set the output named "docs_changed"
Write-Host "::set-output name=docs_changed::$HasDiff"
# Run the step only with "docs_changed" equals "True"
- shell: pwsh
# steps.<step_id>.outputs.<output name>
if: steps.check_file_changed.outputs.docs_changed == 'True'
run: echo publish docs

Answer 1

Instead of complex shell script, I'd recommend using paths-ignore setting.
Read more about this configuration here: Link
Example Action: Link
Code Example:
on:
push:
paths-ignore:
- 'README.md'
- 'backup/**'
- 'masterDir/contentDir/**/*.draft.md'