In K8S, set SSRF leads to short domain name resolution failure.

[qiang1218]

Version: 0.2.15
Environment: Python code execution using the requests library.
K8s： Sandbox and SSRF are in the same namespace.

When SSRF is enabled, setting the SSRF proxy to use a short domain name results in domain name resolution failure. However, using the fully qualified domain name (FQDN) leads to a successful request.

• short domain: http://dify-ssrf-proxy-svc:3128
• FQDN: http://dify-ssrf-proxy-svc.dify-dev.svc.cluster.local:3128

in sandbox pod:

cd /var/sandbox/sandbox-python/etc
hosts resolv.conf ssl

[Harsh23Kashyap]

I'd like to work on this. The Python runner appears to sandbox without copying resolver files, which would explain why the short proxy hostname fails while the FQDN works. I'll open a PR shortly.