optimize readme instruction for development setup

README.md

@@ -61,7 +61,7 @@ The frontend is built with [Angular](https://angular.io).
 
 ### Prerequisites
 
-- [Node.js](https://nodejs.org/en/download)
+- [Node.js](https://nodejs.org/en/download) (at least 14.x)
 - [Yarn](https://yarnpkg.com/en/docs/install)
 - [Docker](https://www.docker.com/products/docker-desktop)
 
@@ -69,24 +69,25 @@ The frontend is built with [Angular](https://angular.io).
 
 1. Run `yarn install`
 2. Run `cd docker`
-3. Run `docker compose build`
-4. Run `docker compose up -d` to start [PostgreSQL](https://www.postgresql.org) and [Redis](https://redis.io)
-5. Run `yarn setup:database` to initialize the database schema and populate your database with (example) data
-6. Start server and client (see _Development_)
-7. Login as _Admin_ with the following _Security Token_: `ae76872ae8f3419c6d6f64bf51888ecbcc703927a342d815fafe486acdb938da07d0cf44fca211a0be74a423238f535362d390a41e81e633a9ce668a6e31cdf9`
+3. Run `docker-compose build`
+4. Run `docker-compose up -d` to start [PostgreSQL](https://www.postgresql.org) and [Redis](https://redis.io)
+5. Run `cd -` to go back to the main directory
+6. Run `yarn setup:database` to initialize the database schema and populate your database with (example) data
+7. Start server and client (see _Development_)
+8. Login as _Admin_ with the following _Security Token_: `ae76872ae8f3419c6d6f64bf51888ecbcc703927a342d815fafe486acdb938da07d0cf44fca211a0be74a423238f535362d390a41e81e633a9ce668a6e31cdf9`
 
-## Development
+### Development
 
-### Start server
+#### Start server
 
 - Debug: Run `yarn watch:server` and click "Launch Program" in _Visual Studio Code_
 - Serve: Run `yarn start:server`
 
-### Start client
+#### Start client
 
 - Run `yarn start:client`
 
-## Testing
+### Testing
 
 Run `yarn test`