DoorDash is a food delivery service that is not currently available in Qatar. However, there are other food delivery services available in Qatar such as Talabat, Uber Eats, and Deliveroo. Here are the general steps to become a food delivery driver in Qatar:

1. Meet the eligibility requirements: You will need to meet the eligibility requirements set by the food delivery service you wish to work for. This typically includes being at least 18 years old, having a valid Qatari driver's license, and having access to a vehicle (car, motorcycle, or bicycle).

2. Apply to become a driver: You can apply to become a driver by visiting the website or app of the food delivery service you wish to work for and following the instructions for driver sign-up. You may need to provide personal information, vehicle information, and a copy of your driver's license.

3. Attend an orientation session: You may be required to attend an orientation session or training program to learn about the food delivery service's policies and procedures.

4. Start delivering: Once you have been approved as a driver, you can start delivering food to customers. You will need to use the app provided by the food delivery service to accept delivery requests and track your earnings.

Overall, the process of becoming a food delivery driver in Qatar can be relatively straightforward, and you may be able to start working within a few days or weeks of applying. However, it's important to note that the requirements and application process may vary depending on the specific food delivery service you wish to work for.