[Enhancement]: Refactor Testcontainers.Xunit module

[digital88]

Problem

As per PR the default parameterless Builder constuctor is deprecated. This line in Testcontainers.Xunit module should be refactored to create instances of Builders using new constructor.

See alse comment.

Solution

• Use factory or delegate to create builders
• Use InternalsVisibleTo attribute and make default constructor internal instead of deleting it later
• Use reflection to create builders
• Something else

Benefit

The working Testcontainers.Xunit module without calling deprecated constructors.

Alternatives

Keep deprecated constructors for some time.

Would you like to help contributing this enhancement?

Yes

[HofmeisterAn]

@0xced FYI: Testcontainers for .NET (like the other language implementations) expects developers to configure and pin the image in future releases (no more default image: #1470).