# Ruby Stack
The example below demonstrates a composition of Ruby, PostgreSQL & Redis with the pre-defined Sidecar.
{% code title="docker-compose.yml" %}
```docker
# Docker Compose Example code for Ruby
image: industryapps.azurecr.io/<>
restart: always
ports:
- 8080:8080
environment:
DATABASE_HOST: db
DATABASE_NAME: <>
DATABASE_USERNAME: <>
DATABASE_PASSWORD: <>
DATABASE_PORT: 5432
REDIS_URL: redis://redis:6379/0
INAPPS_AUTH_API_BASE_URI: https://auth.uat.industryapps.netplea
INAPPS_AASGATEWAY_API_BASE_URI: https://aasgateway.uat.industryapps.net
INAPPS_CLIENT_CREDENTIALS_ID: <>
INAPPS_CLIENT_CREDENTIALS_SECRET: <>
INAPPS_APP_CODE: /<>
RAILS_ENV: production
RAILS_LOG_TO_STDOUT: "true"
INAPPS_MASTER_API_BASE_URI: https://democustomer.uat.industryapps.net/masterMiddleware
logging:
driver: "json-file"
options:
max-file: "5"
max-size: "10m"
db:
image: postgres:13.4-alpine
restart: always
environment:
POSTGRES_USER: <>
POSTGRES_PASSWORD: <>
volumes:
- ./db-data:/var/lib/postgresql/data
redis:
image: redis
restart: always
sidecar:
image: industryapps.azurecr.io/service-discovery-sidecar
container_name: { my-apps-name-sidecar }
restart: always
environment:
NODE_ENV: production
DEPLOYMENT_MODE: public
EUREKA_INSTANCE_IP: { IP }
EUREKA_INSTANCE_PORT: 8080 # PORT
EUREKA_INSTANCE_APP: { APPCODE }
EUREKA_INSTANCE_HOST_NAME: /
EUREKA_INSTANCE_HOME_PAGE_URL: https:///{APPCODE}
EUREKA_HOST: servicediscovery.uat.industryapps.net
EUREKA_PORT: 443
```
{% endcode %}
Inside the `docker-compose.yml` file, add the necessary information which is tagged with curly braces ' `{ }` '.
* **`IP`** -> The IP of the web service which you are running, such as on AWS EC2 Ubuntu, Lightsail instance or Azure Web services as an example.
* **`PORT`** -> The port which the app client-side is served at (e.g. Port 80).
* **`APPCODE`** -> Navigate to Developer dashboard > Applications > {App Name} > App Data, the Application code will be available there.
* **`HOSTNAME`** -> Can be found on the Developer dashboard, the boilerplate is the hostname of the application: `https:///{APPCODE}`
{% hint style="info" %}
If the application container is pushed onto IndustryApps, the HOSTNAME is the Application ID.
{% endhint %}
[Additional information about Production deployment can be found here.](https://docs.industryapps.net/connect-to-the-platform/production-deployment)
---
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