This is a more full-featured responder for pbotp. It's deployable as a container and meant to run behind some kind of authorizing proxy like oauth2-proxy.
All configuration happens via environment variables:
PBOTP_LISTEN_ADDR(optional, default:8080) - HTTP port/address to bind toPBOTP_PRIVKEY- responder Ed25519 private key (base64url without padding)PBOTP_MODE-codeorphrasePBOTP_RESPONSE_LENGTH- response length in digits (forcode) or words (forphrase)