[Enhancement]: Create volumes for testcontainers

[pjroth]

Module

Core

Proposal

I recently needed to create two test containers that shared data storage. One container would generate data, and the second would read this data. My first thought was to create a docker volume and share the volume in the two containers. This avoids bind mounts which complicates things greatly. Bind mounts are harder to make work cross platform and there are restrictions on bind mounts when I run in my CI tool, bitbucket pipelines.

However, I cannot find any way to do this with testcontainers. There is a way to use withVolumesFrom but there is no way to create the volume as best I can tell. Here is an example of what I was trying to do with test containers but shown with docker commands.

Create a first container with a annonymous volume: docker run -it --rm --name source --volume=/share ubuntu bash

Create a second container that uses the same volume from the first: docker run -it --rm --volumes-from source --name dest ubuntu bash

Then in the source container I write a file into the /share directory and I can cat it out in the dest container. I would like to set this up using test containers.

Thanks for this great tool!