Building the Docker image fails with "/.ebextensions/http/conf/httpd.conf": not found

[thms-rmb]

Problem

I am attempting to build the Docker image but I get an error:

#22 [20/28] COPY .ebextensions/http/conf/httpd.conf /etc/httpd/httpd.conf
#22 ERROR: failed to calculate checksum of ref wasaf7v2ggt4r1j4605pq38n3::84eqtu5ksfyftriogz4o0wyz6: "/.ebextensions/http/conf/httpd.conf": not found

Reproduce

1. I clone the repository and enter it

   git clone https://github.com/IIIF/image-validator.git
   cd image-validator

2. I build the Docker image

   docker build --file=Dockerfile --tag=test-build-image-validator --progress=plain .

3. I see the error described in the Problem section above

Expectation

I expect to be able to run the steps in the Reproduce section, but see a successful build

Background

• Docker version 29.1.3, build f52814d
• MacOS 26.1 (25B78)