Starting docker-compose test containers as non-root user

Similar to: https://github.com/testcontainers/testcontainers-java/issues/2590

I'm trying to start our docker-compose based testcontainers tests, and pass in the local username from the running system, in order that the container can write files to mounted volumes with the correct permissions.

I tried a compose with:

version: "3.7"
services:
  myservice:
    image: xxx
    user: ${CURRENT_USER}
    ...
    volumes:
      ./target/:/target

And passed in CURRENT_USER environment variable to testcontainers using:

  env = new DockerComposeContainer(new File("src/main/docker/docker-compose.yml"));
  env.withLocalCompose(true);
  env.withEnv("CURRENT_USER", System.getProperty("user.name"));

However, this fails with:

Cannot start service my server: unable to find user bmiddleton: no matching entries in passwd file

I presume it's looking for that user in the ryuk container, and not the OS - where the user does exist.

How can I get a testcontainers test running from a docker compose file to write its files using the current user of the operating system?

src/main/docker/docker-compose.yml を使用した DockerComposeContainer のセットアップから始め、withLocalCompose(true) と withEnv("CURRENT_USER", System.getProperty("user.name")) を含めます。Compose ベースのテスト失敗を再現し、Compose サービスのユーザーとマウントされた ./target/ ボリュームがどのように扱われているかを調査します。サービスが passwd lookup error なしで、現在の OS ユーザーの権限を使ってマウントされたファイルに書き込めるようになれば完了です。