Emails encrypted with Addy.io cannot be decrypted by open-keychain

[xyhhx]

I'm running addy.io in a Docker container, version 1.0.4.

When I try to decrypt emails sent through addy.io using open-keychain, it fails.

I tried to encrypt a test text file from within the docker container, and decrypt that, it also fails.

If I export that secret key and use it on another machine to encrypt a text file, I can successfully decrypt that.

• Container's gpg --version output:

  gpg (GnuPG) 2.4.3
  libgcrypt 1.10.2
  Copyright (C) 2023 g10 Code GmbH
  License GNU GPL-3.0-or-later <https://gnu.org/licenses/gpl.html>
  This is free software: you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.
  
  Home: /var/www/anonaddy/.gnupg
  Supported algorithms:
  Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
  Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
          CAMELLIA128, CAMELLIA192, CAMELLIA256
  Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
  Compression: Uncompressed, ZIP, ZLIB, BZIP2
  

• Working VM's gpg --version output:

  gpg (GnuPG) 2.4.0
  libgcrypt 1.10.2-unknown
  Copyright (C) 2021 Free Software Foundation, Inc.
  License GNU GPL-3.0-or-later <https://gnu.org/licenses/gpl.html>
  This is free software: you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.
  
  Home: /home/user/.gnupg
  Supported algorithms:
  Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
  Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
          CAMELLIA128, CAMELLIA192, CAMELLIA256
  Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
  Compression: Uncompressed, ZIP, ZLIB, BZIP2
  

While the versions are slightly different, the configurations are otherwise the same.