[Enhancement]: Reuse flag for module Postgres

[comerc]

Proposal

Like GenericContainerRequest:

genericContainerReq := testcontainers.GenericContainerRequest{
  ContainerRequest: req,
  Started:          true,
  Logger:           logger,
  Reuse:            true,
}

[comerc]

I still need the setupBaseDatabase() function in Singletone, so I don't need the flag.

[comerc]

OK, we have .WithInitScripts() for initialization.

Then the feature request is relevant again.

[mdelapenya]

Hi @comerc so you'd see valuable having a WithReuse functional option for all modules, not for Postgres only, right?

[stevenh]

This can already be easily achieved using testcontainers.CustomizeRequestOption for example:

	reuse := testcontainers.CustomizeRequestOption(
		func(req *testcontainers.GenericContainerRequest) error {
			req.Reuse = true
			return nil
		},
	)
	postgress.Run(ctx, "docker.io/postgres:16-alpine", reuse)

[mdelapenya]

please remember that we'd also need the container name for reuse (see https://golang.testcontainers.org/features/creating_container/#reusable-container):

	reuse := testcontainers.CustomizeRequestOption(
		func(req *testcontainers.GenericContainerRequest) error {
			req.Reuse = true
			req.Name = "my-container-name"
			return nil
		},
	)
	postgress.Run(ctx, "docker.io/postgres:16-alpine", reuse)

[mdelapenya]

@comerc given there is a way to customise the request with Reuse, I think you can make progress. I'd appreciate your feedback about that and with that feedback evaluate if a specific functional option is needed for that.

Thanks!

[mdelapenya]

I think #2768 will solve this. Would appreciate your review 🙏