Build Gatsby and push the contents of the public directory to another branch

build.sh

#!/bin/bash

# Build the Gatsby site
npm run build

# Create a new branch for the build files
git branch build-files

# Checkout the new branch
git checkout build-files

# Remove all files from the branch except the .gitignore file
git rm -r --cached .
git reset -- .gitignore

# Move the contents of the public/ directory to the root of the branch
mv public/* .

# Commit the changes
git add .
git commit -m "Add build files"

# Push the changes to the remote branch
git push -u origin build-files

# Switch back to the previous branch
git checkout -