Deploy to Github Pages

Navigate to the Gatsby Project root folder

cd C:\[path-to-gatsby-project-folder]\

Install gh-pages

yarn add --dev gh-pages
or
npm install -D gh-pages

gatsby-config.js changes

Add the Github Repository name to pathPrefix

module.exports = {
  pathPrefix: "/my-blog-starter",
}

package.json changes

Add the Github Repository name to homepage setting

"homepage": "https://snerks.github.io/my-blog-starter",

Add the Github Repository name to repository.url setting

"repository": {
    "type": "git",
    "url": "git+https://github.com/snerks/my-blog-starter.git"
},

scripts changes

Add a deploy script for gh-pages

"scripts": {
    "deploy": "gatsby build --prefix-paths && gh-pages -d public"
}

Deploy to Github Pages

yarn run deploy
or
npm run deploy

Refer to this page, for more details on how to deploy to Github Pages.