It's always been a bit of a pain in Windows to create a dotfile (Like .gitignore, .dockerfile, etc) but I just learned this weird trick that makes it easier:

• In File Explorer, go to the directory where you want to create the file
• Right-click and pick New, then Text Document
• For the name (Say we want to create a .gitignore file), wipe out everything suggested for the filename, including the .txt extension, then give it a name of ".gitignore." (With a dot on BOTH sides of the filename)
• Hit Enter
• You'll get the warning about changing file extensions, click Yes (Or just hit Enter as that's the default)
• Windows will strip the trailing dot, giving you a fresh empty file named .gitignore !!