Ask HN: Is there a service to quickly build APIs from Docker containers?

I want to be able to just provide a Docker container or upload a shell script and then get a URL which I can expose along with API tokens I can hand out. My container can either return just text or a file after processing for a while. Examples would be pdf generation, calculations, running an LLM. The file would be uploaded to some object storage and give me a temporary URL. Queuing, rate limiting etc should be handled automatically. Is there something like this or do I need to build it myself?