Can't build container

[jagauthier]

Hey there! I am trying to build this container myself, and I'm running into an issue.

In the Dockerfile, there is a line:
COPY --from=build /app .

This is trying to copy the /app directory from a container called 'build'.

Can you shed some light on where the /app directory should be coming from?

Thanks!

Dockerfile:109
--------------------
 107 |
 108 |     WORKDIR /app
 109 | >>> COPY --from=build /app .
 110 |
 111 |     EXPOSE 10200
--------------------
ERROR: failed to solve: build: failed to resolve source metadata for docker.io/library/build:latest: pull access denied, repository does not exist or may require authorization: server message: insufficient_scope: authorization failed