Why does the entrypoint script copy files to /var/www, when the image build could do that?

[kastl-ars]

Dear maintainers,

while trying to get OpenCost running on OpenShift, I had a look at the UI image.

Once thing I noticed is this line:

opencost-ui/docker-entrypoint.sh

Line 4 in 459ddc5

cp -rv /opt/ui/dist/* /var/www

Why is this not part of the image build process? Why is done at runtime (which requires write permissions to /var/www/ which causes problems on e.g. OpenShift?

Or, if I understand this line from the Dockerfile properly, why is this done again in the entrypoint?

COPY --from=builder /opt/ui/dist /var/www

https://github.com/opencost/opencost-ui/blob/main/Dockerfile#L30

Kind Regards,
Johannes