Use SqlServerContainer with pyodbc driver

In https://github.com/testcontainers/testcontainers-python/commit/fc5f2df4ba8157d21ecbf3a9a90cd45a61049f90#diff-313a71bf8d0b95ccd84a98f198294e10a7c7086c527efb513d9c6619a12086ee the default driver of SqlServerContainer was changed to pymssql.
Currently, I use the pyodbc driver to communicate with MSSQL databases. This is not possible anymore since then. I've tried

test_container = SqlServerContainer(
        image="mcr.microsoft.com/mssql/server:2017-latest",
        dialect="mssql+pyodbc",
    )

which leads to a timeout
testcontainers.core.exceptions.TimeoutException: Wait time (120s) exceeded for _connect(args: (), kwargs {}). Exception: (pyodbc.InterfaceError) ('IM002', '[IM002] [unixODBC][Driver Manager]Data source name not found and no default driver specified (0) (SQLDriverConnect)')

Alternatively, I've tried to specify the driver

test_container = SqlServerContainer(
        image="mcr.microsoft.com/mssql/server:2017-latest",
        dialect="mssql+pyodbc",
        driver = "ODBC Driver 17 for SQL Server"
    )

but this keyword isn't allowed anymore.
> raise create_unexpected_kwargs_error('run', kwargs) E TypeError: run() got an unexpected keyword argument 'driver'

Is it still the goal of testcontainers to support using the pyodbc driver? If so, I might be motivated to support a little bit making this possible again in 3.6.x versions.

首先查看链接的提交 diff，以及当前的 SqlServerContainer 构造函数和连接设置。重现 pyodbc 示例，并跟踪 dialect 和 driver 参数是如何处理的；当 SqlServerContainer 能够使用 pyodbc 和显式选择的 ODBC 驱动程序建立连接时，即视为完成。