tsc --watch does not work in docker

[laverdet]

🔎 Search Terms

docker devcontainer tsc7

🕗 Version & Regression Information

• This changed between versions v6.0.2 and v7.0.2

⏯ Playground Link

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💻 Code

No response

🙁 Actual behavior

tsc --watch simply does not work on any of my projects in the new Go build. It will do an initial build but after that it notices no changes.

Docker: Version 4.81.0
macOS: 15.7.7 (24G720)
uname -a (in container): Linux docker-desktop 6.12.76-linuxkit #1 SMP Thu Jun 25 13:45:40 UTC 2026 aarch64 GNU/Linux

I am using a straightforward bind mount: "workspaceMount": "source=${localWorkspaceFolder},target=/workspace,type=bind",

I can confirm that the Docker container is receiving filesystem events via entr:

root[17:26:39] [/workspace] $ echo package.json | EV_TRACE=1 entr echo 123
open_max: 1048576
123
0/1: fflags: 0xa r 100644 package.json
123
0/1: fflags: 0xa r 100644 package.json
123

If I add --cap-add=SYS_ADMIN I receive a diagnostic from tsc, but still no watch success:

fanotify_mark on '/workspace/node_modules/.pnpm/redis@5.12.1' failed: name_to_handle_at: operation not supported

🙂 Expected behavior

It should watch files for changes.

Additional information about the issue

I have tried VirtioFS and gRPC FUSE.

I have tried Docker VMM and Apple Virtualization framework.

I also tried a bunch of watchOptions configurations but those didn't seem to have any effect.