You were right Adrian. There were new commits in pg_embedding git repo (the postgresql extension) and the patch could not be applied anymore. It is good that you caught this so early. Using the head branch was a recipe for disaster.
There are no releases for pg_embedding so I created a tarball and I am using that in the Dockerfile now and, for your awareness, patch is no longer needed. Please give it a try and let me know if it worked or not. I will be available until around 5pm EST.
I will also change the Dockerfile to use stable releases of OpenACS and NaviServer just in case.
