we store our data at one master GDrive and share the files to each employee

I've been an IT guy (professionally) for over 35 years. If this is your major use case, why complicate things by self hosting anything?

Get rid of your (presumably Windoze) laptops and replace them with Chromebooks. Capital cost of equipment is much lower (due to no MS licensing and lower hardware demands), no constant updates, no antivirus required, and best of all, if things get messed up it takes literally one minute to reset back to factory defaults (powerwash) and another few minutes after login you will have a completely restored to normal laptop. Even if you guy a new one, all settings get transferred from the cloud upon first login, within minutes, and it looks and acts exactly as before. If no reset is required and all you need to do is a little hand holding, the Chrome Remote Desktop allows you to do so by remote control, even from a Windoze machine. This is why they are so great for tech-challenged people, seniors, kids who like to mess with things, and probably for your business. All you would need if you don't already have it, is a separate Google account per user. Best to assign these rather than have them use their personal account. Then share your GDrive to all users. Since everything is stored and done in the cloud they should have no problems searching for things. They will also have access to the full suite of Google office apps and 15GB of 'personal' cloud storage per account in addition to your shared file store.