dir_create can't set permission from docker

[LDalby]

When creating a new directory using fs::dir_create from docker using this simple docker file:

FROM rocker/r-ver:4.5.1

RUN Rscript -e "if (!requireNamespace('fs', quietly = TRUE)) install.packages('fs', repos='https://cloud.r-project.org')"

VOLUME /data

CMD ["Rscript", "-e", "fs::dir_create('/data/fs-dir')"]

build with:

docker build -t dir-maker .

and run:

docker run --rm \                                            
  -v ~/<PATH>:/data:rw \
  dir-maker

I get this error:

Error: [EACCES] Failed to set permissions for directory '/data/fs-dir': permission denied
Execution halted

The new directory is actually created, but with permissions r-xr--r-x.

I thought that it was related to the permission settings for Docker on macos, but now I'm leaning towards this actually being an fs issue.
If I create a new directory using base::dir.create() the directory is created (rwxr-xr-x) without error (same docker build and run commands).

FROM rocker/r-ver:4.5.1

VOLUME /data

CMD ["Rscript", "-e", "dir.create('/data/base-dir')"]

Possibly related to #465 and #293

─ Session info ────────────────────────────────────────────────────────
 setting  value
 version  R version 4.5.1 (2025-06-13)
 os       macOS Sequoia 15.5
 system   aarch64, darwin20
 ui       X11
 language (EN)
 collate  en_US.UTF-8
 ctype    en_US.UTF-8
 tz       Europe/Copenhagen
 date     2025-07-07
 pandoc   NA
 quarto   1.6.40 @ /usr/local/bin/quarto

fs            1.6.6   2025-04-12 [1] CRAN (R 4.5.0)

Docker version 28.2.2, build e6534b4