Feature: other ways to configure than the `.testcontainers.properties` in Home

What are you trying to do?

I want to run my tests, which rely on Test Containers, on my CI. But I don't have the rights to edit the runner's profile home directory (read-only). So I would like to be able to provide a .testcontainers.properties elsewhere, or from environment variables.

This seems to be possible in the Java version, based on this docstring in the Python version :

Read the .testcontainers.properties for settings. (see the Java implementation for details)
Currently we only support the ~/.testcontainers.properties but may extend to per-project variables later.
:return: the merged properties from the sources.

But (see below) it relies on the Java classpath , and I don't think it would be relevant to use the pythonpath for that on Python's side.
So I am unsure how to proceed towards per-project (or arbitrarily-located) properties files.

But using environment variables should be straightforward.

Why should it be done this way?

Parity with Java implementation, and flexibility.

Other references:

From the Java documentation :

The configuration will be loaded from multiple locations. Properties are considered in the following order:

1. Environment variables
2. .testcontainers.properties in user's home folder. Example locations:

• Linux: /home/myuser/.testcontainers.properties
• Windows: C:/Users/myuser/.testcontainers.properties
• macOS: /Users/myuser/.testcontainers.properties

3. testcontainers.properties on the classpath.
   Note that when using environment variables, configuration property names should be set in upper case with underscore separators, preceded by TESTCONTAINERS_ - e.g. checks.disable becomes TESTCONTAINERS_CHECKS_DISABLE.

Next steps

Does it seem relevant to you ? Would you be interested I contribute a PR for it ?

从 testcontainers/core/config.py 开始，重点查看 issue 中提到的配置加载行为，并将其与链接文档中的 Java 配置顺序进行比较。明确环境变量和备用 properties 位置应如何与 home 文件中的设置交互。完成的标准是：已记录受支持的配置来源及其优先级，并通过测试覆盖这些行为。