Update REMP README file

- Details about first run.
- Useless visual changes.

remp/remp#187

README.md

@@ -10,8 +10,7 @@ See separate documentations of each app:
 
 ## Install
 
-
-**1. Pre-building binaries of Go apps**
+#### 1. Pre-building binaries of Go apps
 
 There's a need for pre-building binaries of Go apps before you can run Docker compose. You don't need Go environment 
 to have set up, but you need Docker to build docker-ready tarballs properly.
@@ -20,13 +19,26 @@ to have set up, but you need Docker to build docker-ready tarballs properly.
 make docker-build
 ```
 
-**2. Docker-compose**
+#### 2. Docker-compose
 
 We've prepared `docker-compose.yml` in a way it's ready for development.
 ```bash
 docker-compose up
 ```
 
+> The appliance was tested with Docker CE 17.12.0 and Docker Compose 1.16.1.
+
+#### 3. First run
+
+If some of the application doesn't have `.env` file, docker will assume it's not installed and it will automatically proceed with all required steps to install project. It will:
+* create `.env` file,
+* install all the dependencies _(composer & yarn)_,
+* prepare the DB structure and insert demo data.
+
+You can see what is installed in [Docker/php/remp.sh](Docker/php/remp.sh).
+
+#### 4. Override services & enviroment settings
+
 Feel free to override/add services via `docker-compose.override.yml`.
 
 This is an excerpt of override we use. It handles proper connection of XDebug to host machine, exposing services
@@ -55,6 +67,10 @@ services:
 
 ```
 
+You can also override enviroment variables in `.env` file of each project. After [first run](#3-first-run) this file contains default values _(copy of `.env.example`)_.
+
+#### 5. Hosts
+
 Application exposes all services via Nginx container.
 Following is list of available hosts. We advise you to add them to your
 `/etc/hosts`:
@@ -80,21 +96,19 @@ Following is list of available hosts. We advise you to add them to your
 127.0.0.1 grafana.beam.remp.press # grafana for manipulating with InfluxDB and displaying charts
 ```
 
-Note: If you use Docker Toolbox, the IP won't be `127.0.0.1`. Use `docker-machine ls` to get IP address of the machine.
-
-Docker will install all the dependencies, prepares the DB structure and also inserts demo data.
-
-The appliance was tested with Docker CE 17.12.0 and Docker Compose 1.16.1.
+> Note: If you use Docker Toolbox, the IP won't be `127.0.0.1`. Use `docker-machine ls` to get IP address of the machine.
 
 ## Manual installation
 
 Please use `docker-compose.yml` and configuration/scripts within [Docker](./Docker) folder as a reference for manual
 installation of each service.
 
+Steps to install dependencies of each project are part of README file for that particular service.
+
 Be aware of `.env.example` files across projects. These need to be copied to `.env` and configured based on your
 configuration.
 
-### Docker Compose
+## Docker Compose
 
 If you're unfamiliar with `docker-compose`, try running `docker-compose --help` as a starter. Each of the subcommands 
 of Docker also supports its own `--help` switch. Feel free to explore it.