docs(info): add installation and config in readme

README.md

@@ -18,6 +18,83 @@ message (number of different rune)
 - $level^{-1}(x)=(5x)^2$ where $x$ is the level
 - $lose(x,y)= x^2\cdot 10^{-2+\ln(x/85)}\cdot\lfloor y/500 +1 \rfloor$ where $x$ is the inactivity time (hour) and $y$ is the xp
 
+## Installation
+
+There are two ways to install the bot: docker and build.
+
+### Docker
+
+1. Clone the repository
+```bash
+$ git clone https://github.com/anhgelus/les-copaings-bot.git
+```
+2. Go into the repository, rename `.env.example` into `.env` and customize it: add your token, change the user and the 
+password of the database
+3. Start the compose file
+```bash
+$ docker compose up -d --build
+```
+
+Now you have to edit `config/config.toml`.
+You can understand how this config file works below.
+After editing this file, you have to start again the bot.
+Every time you edit this file, you must restart the bot.
+
+You can stop the compose file with `docker compose down`
+
+### Build
+
+1. Clone the repository
+```bash
+$ git clone https://github.com/anhgelus/les-copaings-bot.git
+```
+2. Install Go 1.22+
+3. Go into the repository and build the program
+```bash
+$ go build . 
+```
+4. Run the application through bash (or PowerShell if you are on Windows)
+
+Now you have to edit `config/config.toml`.
+You can understand how this config file works below.
+After editing this file, you have to start again the bot.
+Every time you edit this file, you must restart the bot.
+
+## Config
+
+The main config file is `config/config.toml`.
+
+The default configuration is
+```toml
+debug = false
+author = "anhgelus"
+
+[redis]
+address = "localhost:6379"
+password = ""
+db = 0
+
+[database]
+host = "localhost"
+user = ""
+password = ""
+db_name = ""
+port = 5432
+```
+
+- `debug` is true if the bot is in debug mode (don't turn it on unless you are modifying the source code)
+- `author` is the author's name
+- `[redis].address` is the address of redis (using docker, it's `redis:6379`)
+- `[redis].password` is the redis's password
+- `[redis].db` is the db to use
+- `[database].host` is the host of postgres (using docker, it's `postgres`)
+- `[database].user` is the user of postgres to use (using docker, it must be the same value as `POSTGRES_USER` in `.env`)
+- `[database].password` is the user's password of postgres to use (using docker, it must be the same value as
+`POSTGRES_PASSWORD` in `.env`)` 
+- `[database].db_name` is the postgres's database name to use (using docker, it must be the same value as `POSTGRES_DB`
+in `.env`)
+- `[database].port` is the port of postgres to use (using docker, it's `5432`)
+
 ## Technologies
 
 - Go 1.22