Local file access is a container not working despite using `--allow-local-file`

[spkane]

I have used this tool for a long time with the following command, and it appears as if it has started blocking the local file access, despite what should be a proper setup.

$ docker container run --rm -v ${PWD}:/home/marp/app/ marpteam/marp-cli:latest target.md --theme-set spkane.css --pdf --allow-local-file
[  INFO ] Converting 1 markdown...
[  WARN ] Insecure local file accessing is enabled for conversion from
          target.md.
[  WARN ] Marp CLI has detected accessing to local files. They are blocked by
          security reason. Instead we recommend using assets uploaded to online.
          (Or you can use --allow-local-files option if you are understood of
          security risk)
[  INFO ] target.md => target.pdf

it warns that Insecure local file accessing is enabled and then warns that this is being blocked anyhow and that I should use --allow-local-file, which I already am.

I am on macOS, using Docker Desktop.

Everything used also exists in the local file system.

$ ls ./target.md ./spkane.css ./images/
./spkane.css ./target.md

./images/:
chalkboard-16by9.jpg              skane-2018-side-black-cropped.jpg
graph.png                         techlabs-dark.png

Any help would be much appreciated.

I have tried to go back a few revisions, and I still see the error, which confuses me since this worked a while ago.

[spkane]

For the moment, I have used Homebrew to install the marp CLI and that seems to be working fine, so it is likely something specific to the Linux container.

[spkane]

This also appears to only be impacting the PDF and PPTX renders. The HTML render appears to work fine, and only displayed the first warning, but not the second one.

[yhatt]

I could not reproduce that in my macOS 13.2.1 with Docker Desktop 4.16.2. Could you share a minimum and concrete set of Markdown/resources and the Docker command to reproduce the error?

[spkane]

• macOS version:

• Docker Desktop version:

• Docker client version:

Client:
 Cloud integration: v1.0.29
 Version:           20.10.22
 API version:       1.41
 Go version:        go1.18.9
 Git commit:        3a2c30b
 Built:             Thu Dec 15 22:28:41 2022
 OS/Arch:           darwin/amd64
 Context:           default
 Experimental:      true

Server: Docker Desktop 4.16.2 (95914)
 Engine:
  Version:          20.10.22
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.18.9
  Git commit:       42c8b31
  Built:            Thu Dec 15 22:26:14 2022
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.14
  GitCommit:        9ba4b250366a5ddde94bb7c9d1def331423aa323
 runc:
  Version:          1.1.4
  GitCommit:        v1.1.4-0-g5fd4c4d
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

and running a command like this:

$ docker container run --rm -v /Users/spkane/Dropbox/class-materials:/home/marp/app/ marpteam/marp-cli:latest target.md --theme-set spkane.css --pdf --allow-local-files

But oddly, I can not reproduce this anymore either. The second warning is no longer showing up and everything seems to be working fine.

Maybe a reboot fixed something, but that seems a bit strange. I also rebuilt the CSS as I had made a few improvements, but I also doubt that this was the underlying issue.

I'll go ahead and close this for now, but may re-open it if I see it again.