---
title: "Ruby APM with Docker"
slug: "ruby-apm-with-docker"
description: "Learn how to install Ruby APM Profiler for Docker/Docker Swarm. Follow the Retrace Docker Install Guide and configure your Ruby app for efficient monitoring in Retrace dashboard."
updated: 2020-06-18T20:40:19Z
published: 2020-06-18T20:40:19Z
---

> ## 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 APM with Docker

This document details how to install the **Ruby APM Profiler** in your **Ruby** application running on **Docker** or **Docker Swarm**.

## Prerequisite

Follow the [Retrace Docker Install](https://docs.stackify.com/docs/retrace-docker-install) Guide.

## Ruby Docker Setup

### Add Stackify Ruby APM GEM

**Add the Stackify APM GEM to each application to monitor.** Modify application `Gemfile`:

```
gem 'stackify-ruby-apm'
```

### Configure Application

Add `config/stackify_apm.yml` to your application, modify **application_name** and **environment_name**.

```
application_name: 'Ruby Application'
environment_name: 'Production'
```

#### Rails

Profiler will startup automatically, no additional configuration.

#### Non-Rails

Include **StackifyRubyAPM::Middleware** when starting your application:

```
# config.ru

require 'stackify-ruby-apm'
use StackifyRubyAPM::Middleware
StackifyRubyAPM.start

# application startup

at_exit { StackifyRubyAPM.stop }
```

## Running your Application

Start your application with the `stackify` shared volume.

```
docker run -v stackify:/usr/local/stackify [your-application-image]
```

## Verify

Make application requests, you can then verify results in the Retrace dashboard.