Add docker configuration options to file_tools.py

[tanjelly]

What does this PR do?

这三个字段正是平台对 Hermes 沙箱做定制化管控的关键开关：

参数	控制什么	不补丁的后果
docker_env	容器内环境变量键值对	无法向沙箱注入固定环境变量
docker_extra_args	docker run 的任意额外参数	无法对沙箱做细粒度 Docker 级控制
docker_persist_across_processes	容器是否跨调用复用	容器生命周期策略不可配置

Related Issue

None

Fixes #

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)

[spfcraze]

This was generated by AI during triage.

Summary:
Open PR #65367 already changes tools/file_tools.py for the same purpose — propagating docker config to file tools — so this PR overlaps in-flight work.

Problems:

• Open PR fix: propagate Docker policy to file tools #65367 "fix: propagate Docker policy to file tools" changes tools/file_tools.py and adds tests/tools/test_file_tools_container_config.py.
• Open PR fix(tools): bring file_tools + code_execution container_config to terminal_tool parity #35660 "fix(tools): bring file_tools + code_execution container_config to terminal_tool parity" changes tools/file_tools.py and tools/code_execution_tool.py.

Solution:
Consolidate with #65367, which predates this PR and targets the same file, so both changes do not land on the same lines.

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Checked against e6a8b09 — the tip of patch-2 when this was written.