Online OSS Auction Tool?
This is a good question and now that you mention it, the market does seem ready for an alternative.
Which has a Docker.
I hadn't heard of it. Escrow and payment processing support would be key factors. Also, similarly to fax machines back in the day, the more people who have one, the more useful it becomes to have one, so growing a userbase would be important.
It might be worth investigating some real-world auction places like Sothebys https://www.sothebys.com/en/ or livestock auction places to see what is happening there.
Or possibly barter communities?
OpenBazaar 3.0 is in the works, apparently. https://openbazaar.org/
There is Sylius, which has a nice page, enough to suggest Cloudron's team take a quick look at it. (MIT, Docker):
Perhaps another way forward would be a module or extension to existing e-commerce platforms which would enable bidding instead of fixed pricing.
Nice thread idea. It should be an interesting discussion.
So, I just looked closely at Sylius. Their demo site was good, seems like it does everything an ecommerce site would do. Going to try and get it up and running in "auction mode" if that's even a thing. The docker image is incredibly simple, even though it's written in Symphony which is definitely NOT simple hehe.