The bot dock is the most expensive non-decorative furnishing in the game costing 450 coins, and can only be used to place one MK III Steam H-Bot. It requires you to unlock the engineering skill before being able to use it.
The dock itself is used by the h-bot to store items that were dropped on the floor by Customers. To retrieve items from the dock, the player needs to interact with the h-bot by pressing the F key while looking at it.
Items stored in the dock will remain there until the player withdraws them. However, the player can also set the h-bot to restock the items that are stored in the safe. In this case, the h-bot will withdraw items and place them on nearby compatible displays.
If the player sells the dock for whatever reason, any items that were stored in it's safe would be transferred into the player's inventory.