bash function to build & push multi-architecture docker images upstream

.zshrc

dbx() {
    echo "Enter the tag (e.g., markoshust/magento-php:8.4-fpm-0):"
    read -r tag

    if [ -z "$tag" ]; then
        echo "Error: Tag cannot be empty"
        return 1
    fi

    echo "You entered: $tag"
    echo "Is this correct? (y/n)"
    read -r confirm

    if [[ $confirm == [yY] || $confirm == [yY][eE][sS] ]]; then
        echo "Starting build process..."
        if ! docker build --platform linux/amd64,linux/arm64 --tag "$tag" .; then
            echo "Error: Docker build failed"
            return 1
        fi
        
        echo "Build completed successfully!"
        echo "Do you want to push upstream? (y/n)"
        read -r push_confirm
        
        if [[ $push_confirm == [yY] || $push_confirm == [yY][eE][sS] ]]; then
            echo "Starting push process..."
            if ! docker build --push --platform linux/amd64,linux/arm64 --tag "$tag" .; then
                echo "Error: Docker push failed"
                return 1
            fi
            echo "Push completed successfully!"
        else
            echo "Skipping push to upstream."
        fi
    else
        echo "Operation cancelled."
        return 0
    fi
}