Merge pull request #476 from OpenBeta/readme/#348

Add some more detail on installing mongodb

just a readme touchup so we can clear out old issues

Author: CocoisBuggy

README.md

@@ -1,4 +1,4 @@
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+c[![Build](https://gitlab.com/openbeta/openbeta-graphql/badges/develop/pipeline.svg)](https://gitlab.com/openbeta/openbeta-graphql/-/pipelines) [![License](https://img.shields.io/github/license/openbeta/openbeta-graphql?style=flat-square)](./LICENSE)
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@@ -65,6 +65,12 @@ query Example1 {
 ```
 
 ### Development
+#### Installing mongodb
+
+This step often trips up new devs. the install for most database engines can be little bit hairy, but mongodb is made a particular challenge by its lack of wide availability in common package managers. If you have docker installed, then your easiest bet is definitely to just do `docker compose up` when you need the persistent database. If that doesn't seem like fun to you, your next option is to get a binary [from their page directly](https://www.mongodb.com/try/download/community) they have wide platform support and you shouldn't have an issue finding one that will run for you.
+
+When configuring it for development, it should be fine to leave auth disabled, since the data inside is not sensitive.
+
 #### Requirements
 
 - [Docker](https://docs.docker.com/get-docker)