Add support for TESTCONTAINERS_DOCKER_SOCKET_OVERRIDE for ryuk (#205)

Author: cristianrgreco

README.md

@@ -21,9 +21,10 @@ The following environment variables are supported:
 | `DEBUG` | `testcontainers` | See output |
 | `DEBUG` | `testcontainers:containers` | See container output |
 | `DEBUG` | `testcontainers*` | See all output |
-| `DOCKER_HOST` | `tcp://docker:2375` | Override the Docker host |
+| `DOCKER_HOST` | `tcp://docker:2375` | Daemon socket to connect to |
+| `TESTCONTAINERS_HOST_OVERRIDE` | `docker.svc.local` | Docker's host on which ports are exposed |
+| `TESTCONTAINERS_DOCKER_SOCKET_OVERRIDE` | `/var/run/docker.sock` | Path to Docker's socket. Used by Ryuk and a few other containers that need to perform Docker actions
 | `TESTCONTAINERS_RYUK_DISABLED` | `true` | Disable [ryuk](#ryuk) |
-| `TESTCONTAINERS_HOST_OVERRIDE` | `docker.svc.local` | Override Docker's host on which ports are exposed |
 | `RYUK_CONTAINER_IMAGE` | `registry.mycompany.com/mirror/ryuk:0.3.0` | Custom image for [ryuk](#ryuk) |
 | `SSHD_CONTAINER_IMAGE` | `registry.mycompany.com/mirror/sshd:1.0.0` | Custom image for [SSHd](#SSHd) |
 

src/reaper.ts

@@ -80,12 +80,14 @@ export class ReaperInstance {
   private static async createRealInstance(dockerClient: DockerClient): Promise<Reaper> {
     const sessionId = dockerClient.getSessionId();
 
+    const dockerSocket = process.env["TESTCONTAINERS_DOCKER_SOCKET_OVERRIDE"] ?? "/var/run/docker.sock";
+
     log.debug(`Creating new Reaper for session: ${sessionId}`);
     const container = await new GenericContainer(this.getImage())
       .withName(`testcontainers-ryuk-${sessionId}`)
       .withExposedPorts(8080)
       .withWaitStrategy(Wait.forLogMessage("Started!"))
-      .withBindMount("/var/run/docker.sock", "/var/run/docker.sock")
+      .withBindMount(dockerSocket, "/var/run/docker.sock")
       .withDaemonMode()
       .withPrivilegedMode()
       .start();