Railway Custom Postgres Option

import CodeBlock from '@theme/CodeBlock'

Using a custom PostgreSQL database

By default, Wasp uses the standard PostgreSQL image provided by Railway when creating a new database for your app. However, if your application requires specific PostgreSQL extensions (e.g., PostGIS), you can specify a Docker image with a custom PostgreSQL installation, with the --db-image <docker-image> flag.

:::tip You only need to specify the Docker image once, when first creating the app. :::

<CodeBlock language="shell">{ # Use PostGIS: wasp deploy railway ${props.command} my-wasp-app --db-image postgis/postgis }</CodeBlock>

<CodeBlock language="shell">{ # Use pgvector: wasp deploy railway ${props.command} my-wasp-app --db-image pgvector/pgvector:pg16 }</CodeBlock>

The service name will always be Postgres, regardless of the image used.