If that's the case and you’d like to run the Dropbox app “headless” (using the command line only), you only need the Dropbox app essential requirements. Then you can install the app and use the Linux Command Line Interface (CLI) to control the desktop app.
Note that when you're running Dropbox on your server for the first time, you'll be asked to copy and paste a link in a working browser to create a new account or add your server to an existing account. Once you do, your Dropbox folder will be created in your home directory. Download this Python script to control Dropbox from the command line. For easy access, you can put a symlink to the script anywhere in your PATH.
More information about this can be found here:
Let me know how it goes!