For a new server with Web 8.1.1 and DXA 2.0 (.NET) and no modifications, on browsing webpages admins see that all content images have markup such as the below and hence images are not displaying successfully.
img src="/cid/scale/1024x311/LOCALHOST/media/ballon-burner_tcm6-315.jpg" alt="" data-aspect="3.3" width="100%"
Working backwards from the issue, it appears that the CID TBB might have been used to prepend content of the data-cid-rule attribute to the beginning of the src URL.
However, admin only did the DXA import and website deployment for basic setup, and did not customize DXA templates. I have confirmed this by inspecting the DXA homepage page template/article template/content page template TBBs and see just the default ones were used. Also the CID assembly was not visible when inspecting the Template Builder. Although too lengthy to add to question here, I also have the page markup and debug output when running the Article template through debug in Template Builder and can add extracts to the issue description if helpful.
Any thoughts on why the CID TBBs have erroneously changed the DXA content image URLs, and what might be done to correct this?