issue during `./build.sh`

[fprasx]

During the first build in ./build.sh (building the builder I believe), I get the following error:

#9 5.095 Enter a number (default=1): error: invalid number: y
#9 5.095
#9 5.095 Enter a number (default=1): error: invalid number: y
#9 5.095
#9 5.095 Enter a number (default=1): error: invalid number: y
#9 5.095
#9 5.095 Enter a number (default=1): e
#9 5.095 [output clipped, log limit 200KiB/s reached]

resulting from this step:

#9 [2/6] RUN yes | pacman -Syu

It appears like some package is asking for a number during the package syncing.

Here is the full error output:

========= Build builder image ==========
#0 building with "default" instance using docker driver

#1 [internal] load .dockerignore
#1 transferring context: 162B done
#1 DONE 0.0s

#2 [internal] load build definition from builder.Dockerfile
#2 transferring dockerfile: 745B done
#2 DONE 0.0s

#3 resolve image config for docker.io/docker/dockerfile:1-experimental
#3 DONE 0.2s

#4 docker-image://docker.io/docker/dockerfile:1-experimental@sha256:600e5c62eedff338b3f7a0850beb7c05866e0ef27b2d2e8c02aa468e78496ff5
#4 CACHED

#5 [internal] load build definition from builder.Dockerfile
#5 DONE 0.0s

#6 [internal] load .dockerignore
#6 DONE 0.0s

#7 [internal] load metadata for docker.io/library/archlinux:latest
#7 DONE 0.1s

#8 [1/6] FROM docker.io/library/archlinux@sha256:fed6efe803e79d94544f93607e4afec1056cfd9bee5744c965eec0944624d81f
#8 CACHED

#9 [2/6] RUN yes | pacman -Syu
#9 0.286 :: Synchronizing package databases...

I'm building on Ubuntu 22.04.01, let me know if other information would be helpful.