Please fill in the following information:

Issue description: 

 WORKDIR is instead preserved between “nested” builds:
~~~
#Containerfile.a
FROM registry.access.redhat.com/ubi9/ubi:9.5
WORKDIR /opt

$ podman build -f Containerfile.a -t test:1

#Containerfile.b
FROM localhost/test:1
CMD ["pwd"]

$ podman build -f Containerfile.b -t test:2

$ podman run test:2
/opt ← OUTPUT
~~~

Without this clarification, step 2.3 (where we COPY --from) doesn't make sense, since the reader can't figure out why the source is "/app/numbers.txt" and not "/numbers.txt" 

Steps to reproduce:

Workaround:

Expected result: