Support for tmpfs

[alienscience]

This library is awesome for integration testing -- many thanks.

One thing that I have noticed is that most tests can run much faster if the docker tmpfs feature is used when running a container. For instance, on OSX one test went down from 40 seconds to 10 seconds when the database was run in tmpfs.

Using tmpfs is done through the HostConfig part of the docker API.

Would it be possible to support the tmpfs option in docker-it-scala?

[viktortnk]

@alienscience Thanks for suggesting this option. I've added support for it, but it looks like this option is only available in Spotify's executor.

Released under v0.9.4

[alienscience]

Many thanks, this works great and gave the performance increase we were expecting.

In case anybody is reading this in the future, this is how to use tmpfs:

  // Run the app on tmpfs -- this improves peformance especially on OSX
  val hostConfig = HostConfig(tmpfs = Some(Map("/YOUR/mountpoint/here" -> "rw,size=250M")))

  // Then add hostConfig when creating the docker container
  val myContainer = DockerContainer(containerName)
    .withPorts(MyPort -> None)
    .withReadyChecker(
      DockerReadyChecker.LogLineContains(
        "Your ready checker here"
      )
    )
    .withHostConfig(hostConfig)