feat: use upstream nginx conf files

Dockerfile

@@ -41,16 +41,15 @@ RUN chown -R nonroot:nonroot /var/cache /var/run
 RUN touch /var/run/nginx.pid && \
     chown -R nonroot:nonroot /var/run/nginx.pid
 
+RUN sed -i -E 's/(listen[ ]+)80;/\18000;/' /packages/etc/nginx/conf.d/default.conf
+
 FROM scratch
 COPY --from=builder /packages /
 COPY --from=builder /etc/passwd /etc/passwd
 COPY --from=builder /etc/group /etc/group
 COPY --from=builder /var/cache /var/cache
 COPY --from=builder /var/run /var/run
 
-COPY nginx_configs/nginx.conf /etc/nginx/nginx.conf
-COPY nginx_configs/default.conf /etc/nginx/conf.d/default.conf
-
 RUN --mount=type=bind,from=builder,target=/mount ["/mount/bin/ln", "-sf", "/dev/stdout", "/var/log/nginx/access.log"]
 RUN --mount=type=bind,from=builder,target=/mount ["/mount/bin/ln", "-sf", "/dev/stderr", "/var/log/nginx/error.log"]