Feature/extend documentation for self hosting (#565)

* Extend documentation for self-hosting

* Add tag "latest" to docker image

* Update changelog

README.md

@@ -81,19 +81,27 @@ The backend is based on [NestJS](https://nestjs.com) using [PostgreSQL](https://
 
 The frontend is built with [Angular](https://angular.io) and uses [Angular Material](https://material.angular.io) with utility classes from [Bootstrap](https://getbootstrap.com).
 
-## Run with Docker
+## Run with Docker (self-hosting)
 
 ### Prerequisites
 
 - [Docker](https://www.docker.com/products/docker-desktop)
 
-### Setup Docker Image
+### a. Run environment
 
-Run the following commands to build and start the Docker image:
+Run the following command to start the Docker images from [Docker Hub](https://hub.docker.com/r/ghostfolio/ghostfolio):
 
 ```bash
-docker-compose -f docker/docker-compose-build-local.yml build
-docker-compose -f docker/docker-compose-build-local.yml up
+docker-compose -f docker/docker-compose.yml up
+```
+
+### b. Build and run environment
+
+Run the following commands to build and start the Docker images:
+
+```bash
+docker-compose -f docker/docker-compose.build.yml build
+docker-compose -f docker/docker-compose.build.yml up
 ```
 
 ### Setup Database
@@ -112,6 +120,12 @@ Open http://localhost:3333 in your browser and accomplish these steps:
 1. Go to the _Admin Control Panel_ and click _Gather All Data_ to fetch historical data
 1. Click _Sign out_ and check out the _Live Demo_
 
+### Finalization
+
+1. Create a new user via _Get Started_
+1. Assign the role `ADMIN` to this user (directly in the database)
+1. Delete the original _Admin_ (directly in the database)
+
 ### Migrate Database
 
 With the following command you can keep your database schema in sync after a Ghostfolio version update: