This server allows you to upload pictures to it, using a no-registration account system. The server will return a URL to the client with which they can view the uploaded picture online. The link may be shared. The clients can also view all of their all-time uploads and see the likes of each picture individually in a gallery.
This server is built for QDU.
You will need docker and docker-compose installed on your system and you should have basic knowledge of how they work.
You do NOT need anything else (not even go).
The docker-compose file offers a variety of options and is the main configuration file for your server. Especially the 'environment' section under 'qdu-server' should be interesting for you. You will need to enter your domain and the directory for saving the pictures. Please also adjust the latter under 'volumes'.
To start up your very own QDU Server just download this repository and use the docker-compose. This will start up a go-builder container that will compile and build the executable and after that a container actually containing and executing the executable and a database service. You don't need go installed on your system!
If you want to use the (web-)server with TLS for HTTPS (so the clients' browsers won't freak) you may consider using a reverse proxy such as NGINX, which will allow you to fairly easy add TLS certificates and encrypt traffic.
For obtaining free TLS certificates I can recommend Certbot.
NGINX and Certbot work pretty well together and there are hundreds of resources on how to set them up.