chat-service: improve readme

Signed-off-by: Victor Login <batazor@evrone.com>

internal/boundaries/chat/chat/Makefile

@@ -0,0 +1,16 @@
+SELF_DIR := $(dir $(lastword $(MAKEFILE_LIST)))
+
+# INCLUDE ==============================================================================================================
+# Include Makefile
+include ../../../../ops/Makefile/common.mk
+
+deps: ## Install dependencies
+	@mix local.hex
+	@mix deps.get
+
+migration: ## Create and migrate your database
+	@mix ecto.setup
+
+start: ## Start the application
+	@echo "Open http://localhost:4000"
+	@mix phx.server

internal/boundaries/chat/chat/README.md

@@ -2,28 +2,26 @@
 
 Chat platform
 
-### Getting start
+### Getting started
 
-To start your Phoenix server:
+We use Makefile for build and deploy.
 
-  * Install dependencies with `mix local.hex` and `mix deps.get`
-  * Create and migrate your database with `mix ecto.setup`
-  * Start Phoenix endpoint with `mix phx.server` or inside IEx with `iex -S mix phx.server`
-
-Now you can visit [`localhost:4000`](http://localhost:4000) from your browser.
-
-Ready to run in production? Please [check our deployment guides](https://hexdocs.pm/phoenix/deployment.html).
+```bash
+$> make help # show help message with all commands and targets
+```
 
 ### Requirements
 
 - Elixir
 - Phoenix
-- Postgres
+- Cassandra
 
 ### Learn more
 
-  * Official website: https://www.phoenixframework.org/
-  * Guides: https://hexdocs.pm/phoenix/overview.html
-  * Docs: https://hexdocs.pm/phoenix
-  * Forum: https://elixirforum.com/c/phoenix-forum
-  * Source: https://github.com/phoenixframework/phoenix
+> [!TIP]
+>
+>  * Official website: https://www.phoenixframework.org/
+>  * Guides: https://hexdocs.pm/phoenix/overview.html
+>  * Docs: https://hexdocs.pm/phoenix
+>  * Forum: https://elixirforum.com/c/phoenix-forum
+>  * Source: https://github.com/phoenixframework/phoenix