[pve-devel] [PATCH container] config: allow empty environment variables

[Fabian Grünbichler]

On November 17, 2025 1:49 pm, Filip Schauer wrote:
> This fixes a problem with the docker.io/httpd OCI image which specifies
> an empty environment variable. This violated the pattern of the `env`
> property, causing `pct config <vmid>` to fail with:

shouldn't we handle this and drop that environment variable entry
instead?

> ```
> env: value does not match the regex pattern
> ```
> 
> Signed-off-by: Filip Schauer <f.schauer at proxmox.com>
> ---
>  src/PVE/LXC/Config.pm | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/PVE/LXC/Config.pm b/src/PVE/LXC/Config.pm
> index cd3a172..b6fc9a8 100644
> --- a/src/PVE/LXC/Config.pm
> +++ b/src/PVE/LXC/Config.pm
> @@ -671,7 +671,7 @@ my $confdesc = {
>          description => 'The container runtime environment as NUL-separated list.'
>              . ' Replaces any lxc.environment.runtime entries in the config.',
>          optional => 1,
> -        pattern => qr/(?:\w+=[^\x00-\x1F\x7F]+)(?:\0\w+=[^\x00-\x1F\x7F]+)*/,
> +        pattern => qr/(?:\w+=[^\x00-\x1F\x7F]*)(?:\0\w+=[^\x00-\x1F\x7F]*)*/,
>      },
>      hookscript => {
>          optional => 1,
> -- 
> 2.47.3
> 
> 
> 
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