句中 inside the door 的用法没有问题，意思是“在门的内侧”（不是“在门本身的里面”），句意：

He put his tools just inside the door of his hut. 他把工具就放在他小屋的门内侧。

又如：

They stood inside the door and shook hands with each of the quests. 他们站在门里边，和每一个客人握手。

They took the only free table, which was just inside the door. 他们在刚进门处的唯一一张空桌子边坐下。

I was taken aback to find an elderly woman sitting inside the door of the men’s room. 看到一个老妇人坐在男厕所的门内，我吓了一跳。