Devcontainer setup ad-hoc parsing fails on Rocky 8.5
#232.159 aberto em 24 de out. de 2024
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Description
Does this issue occur when all extensions are disabled?: Yes
- VS Code Version: 1.92.0 (Commit: b1c0a14de1414fcdaa400695b4db1c0799bc3124)
- OS Version: Rocky Linux 8.5
The check-requirements-linux.sh script that runs as part of a devcontainer setup wants to parse the OS version from /etc/os-release.
That file "is a newline-separated list of environment-like shell-compatible variable assignments" (see man os-relase on Linux).
The script tries to parse the value it wants here, by running:
OS_ID="$(cat /etc/os-release | grep -Eo 'ID=([^"]+)' | sed -n '1s/ID=//p')"
This looks for a key-value pair of the form ID=value and strips out the ID= part.
It assumes the pair is not of the form ID="value", which appears to be permitted by the file format, and appears in the wild in Rocky 8.5 where the relevant line reads:
ID="rocky"
In that case the grep command will fail to match the line and the value of OS_ID will be empty, resulting in a non-zero exit code of 1.
This could be fixed by changing the variable assignment to:
OS_ID=$(source /etc/os-release && echo $ID)
This will run a subshell in which the values in the file get assigned to environment variables, which removes any surrounding " marks.
Since this runs in a subshell the current shell's environment will not pick up these variables.
Steps to Reproduce:
- Start a devcontainer built from Rocky 8.5.