Apache Solr 9.0 OCR of Image Saved As PDF - pdf

Question

I've got solr 9.0 running with the a request handler set up for Tika per https://solr.apache.org/guide/solr/latest/indexing-guide/indexing-with-tika.html.
If I pass in a pdf document (that is, a text document that is stored as a PDF), I get the expected results of being able to query for the content of the document.
If, however, I pass in a pdf that is an image (it is a scanned page from a newsletter, then saved as a PDF), no OCR is taking place. I'm using solrj to communicate with the solr install.
I also tried indexing the PDF after it was exported as a PNG. This worked testing with locally running tika, but not with solr.
fun index(file: File) {
val urlString = "http://localhost:8983/solr/films"
val solr = HttpSolrClient.Builder(urlString).build()
solr.parser = XMLResponseParser()
val req = ContentStreamUpdateRequest("/update/extract")
// I've tried both "image/pdf" and "application/pdf"
req.addFile(file, "image/pdf")
req.setParam("literal.id", file.name);
req.setAction(ACTION.COMMIT, true, true)
val result = solr.request(req)
println("Result: $result")
}
solrconfig.xml
<requestHandler name="/update/extract"
startup="lazy"
class="solr.extraction.ExtractingRequestHandler" >
<lst name="defaults">
<str name="lowernames">true</str>
<str name="uprefix">ignored_</str>
<!-- capture link hrefs but ignore div attributes -->
<str name="captureAttr">true</str>
<str name="fmap.a">links</str>
<str name="fmap.content">_text_</str>
</lst>
</requestHandler>
I decided to test in isolation with tika, so I started the docker container
docker run -it \
--name tika-server-ocr \
-d \
-p 9998:9998 \
apache/tika:1.24-full
If I passed in the file as a PDF, it did not work:
curl -T "285 October-5.pdf" http://localhost:9998/tika
If I pass in an exported png from the PDF, it does work:
curl -T "285 October-5 copy.png" http://localhost:9998/tika
NEGOTIATING GARRY'S ANCHORAGE
Garry's Anchorage is a popular rest spot on the western
I'm guessing there is a bit of config or perhaps a parameter I need to send in to solr during the extraction?