I am using the docker dev setup (slightly updated Dockerfile and docker-compose.yml).
When I try to generate a GPG keypair (via the web UI) I can observe the following error in the mailpile process:
Traceback (most recent call last):sage
mailpile_dev | File "/Mailpile/mailpile/crypto/gpgi.py", line 1514, in run
mailpile_dev | gpg.chat(self.gpg_args(), self.run_script, self.main_script)
mailpile_dev | File "/Mailpile/mailpile/crypto/gpgi.py", line 1303, in chat