---
title: "Ruby Docker Configuration"
slug: "ruby-docker-configuration-prefix"
description: "Learn how to bind the Host Trace directory to the Guest Trace directory for reading app traces in Docker. Follow the provided example and use --mount argument in docker run command."
updated: 2022-01-03T20:24:56Z
published: 2022-01-03T20:24:56Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stackify.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Ruby Docker Configuration

Follow the instructions here on how to add our profiler to your Dockerfile.

## Binding the Host Trace directory to the Guest Trace directory

To get Prefix to read the traces from your app in docker, you need to use bind-mounts as mentioned in [this article](https://docs.docker.com/storage/bind-mounts/).

## Example

If the host OS is Windows and you have a Linux OS in the container, you need to bind `C:\ProgramData\Stackify\Ruby\Log` to `/usr/local/stackify/stackify-ruby-apm/log` for Prefix to see the logs.

          Fixed Logging Directories for Ruby traces

          

Windows: `C:\ProgramData\Stackify\Ruby\Log`

Linux: `/usr/local/stackify/stackify-ruby-apm/log`

## To bind these directories

We use the ***--mount*** argument for the docker run command as follows: `docker run -it --rm -p 8000:80 \` `--mount type=bind,source="C:\ProgramData\Stackify\Ruby\Log",target=/usr/local/stackify/stackify-ruby-apm/log \` `--name ruby_sample ruby-apm`