Dockerize postgraphile

postgraphile/README.md

@@ -2,6 +2,18 @@
 
 This application utilizes Postgraphile to expose GraphQL endpoints for exposure of the varied data that VulcanizeDB tracks.
 
+## Docker use
+_Note: currently this image is ~500MB large (unpacked)_
+
+Build the docker image in this directory. Start the `GraphiQL` frontend by:
+* Setting the env variables for the database connection: `DATABASE_HOST`,
+  `DATABASE_NAME`, `DATABASE_USER`, `DATABASE_PASSWORD` (and optionally
+  `DATABASE_PORT` if running on non-standard port).
+  * The specified user needs to be `superuser` on the vulcanizeDB database
+* Run the container (ex. `docker run -e DATABASE_HOST=localhost -e DATABASE_NAME=vulcanize_public -e DATABASE_USER=vulcanize -e DATABASE_PASSWORD=vulcanize -d postgraphile:latest`)
+* GraphiQL is available at `:3000/graphiql`
+
+
 ## Building
 
 *This application assumes the use of the [Yarn package manager](https://yarnpkg.com/en/). The use of npm may produce unexpected results.*
@@ -16,4 +28,4 @@ Provide the built bundle to node as a runnable script: `node ./build/dist/vulcan
 
 ## Testing
 
-Tests are executed via Jasmine with a console reporter via the `yarn test` task.
+Tests are executed via Jasmine with a console reporter via the `yarn test` task.