Docker build with - Can't check signature: No public Key

General questions
1

When hitting the below in my docker build:

gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 814E346FA01A20DBB04B6807B5DBD5925590A237; \
gpg --batch --verify matomo.tar.gz.asc matomo.tar.gz; \

I’m getting:

gpg: Can't check signature: No public key

This worked the first time I build but now with an updated version it fails. Can anyone provide direction to the fix? I’m assuming it’s an updated key but where to get that.