FATAL ERROR: The provided RunnerConfig is missing the required field 'gdb' when running zephyr.exe for native_sim in Docker

[TK5090]

Setup:

OS: Ubuntu 24.04 (inside Docker)

Target Board: native_sim

Zephyr Build System: west

Zephyr version: v4.1.0

Build Command:
west build -b native_sim path/to/app

Run Command:
./build/zephyr/zephyr.exe

Description
I’m running Zephyr in a Docker container based on Ubuntu 24.04, targeting native_sim. The build completes successfully, but when I try to run the generated zephyr.exe, I get the following fatal error:
FATAL ERROR: The provided RunnerConfig is missing the required field 'gdb'

No custom configuration or debug setup was applied — this happens directly after a west flash command

The "gdb" is missing in build/zephr/RunnerConfig.json

[TK5090]

gdb was missing.
I installed it with apt-get install -y gdb.

Rebuild my project and now with west flash, it run the zephyr.exe file

[dkouba-atym]

Interestingly, I am having the same issue, however I have gdb installed and accessible in my path. Anything else you did to get this working?

root@ef6540709cf3:/workspaces/atym-runtime-native-sim/runtime# west flash
-- west flash: rebuilding
[2/2] Running utility command for native_runner_executable
-- west flash: using runner native
FATAL ERROR: The provided RunnerConfig is missing the required field 'gdb'.
An exception trace has been saved in /tmp/west-exc-bn5g92hs.txt
root@ef6540709cf3:/workspaces/atym-runtime-native-sim/runtime# gdb
GNU gdb (Debian 13.1-3) 13.1
Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) 

[TK5090]

Are you sure that gdb is accessible?
What happens when you type gdb in your terminal?

How did you install it?

Where did it installed, in what folder?

[dkouba-atym]

I ended up having to rebuild my Devcontainer from scratch to solve a different problem, and now it works. Can't explain what happened, unfortunately.