Apply readme improvement ideas

backend/README.md

@@ -2,7 +2,7 @@
 
 ## Setup
 
-### Install dependencies
+### Node and npm versions
 
 Install will fail if not using correct node and npm versions.
 
@@ -11,20 +11,22 @@ Install will fail if not using correct node and npm versions.
 
 If using nvm, run `nvm install` to automatically switch to the correct versions.
 
+### Install dependencies
+
 ```bash
 npm install
 ```
 
-### Add database url to .env file
+### Run database in docker container
 
 ```bash
-DATABASE_URL=mysql://root:poppipassword@localhost:3306/poppiDB
+docker run --name poppi-dev-db -e MARIADB_ROOT_PASSWORD=poppipassword -p 3306:3306 -d mariadb:11.3.2
 ```
 
-### Run database in docker container
+### Add database url to .env file
 
 ```bash
-docker run --name poppi-dev-db -e MARIADB_ROOT_PASSWORD=poppipassword -p 3306:3306 -d mariadb:11.3.2
+DATABASE_URL=mysql://root:poppipassword@localhost:3306/poppiDB
 ```
 
 ### Apply current migrations to database