Update document and docker compose for relay

doc/bmr.md

@@ -1,18 +1,78 @@
 # BMR (BTP Message Relay)
 
 ## Introduction
-
-* Unidirectional relay
-* Monitor BTP events  
+* Relay direction setting ( both,front,reverse )
+* Monitor BTP events
+* Send BTP Relay Message
 * Gather proofs for the events
 
-## Integrated blockchain
-* [ICON](icon.md)
-* [ICON Enterprise Edition](iconee.md)
+## Platform preparation
+
+* GoLang 1.19
+
+  **Mac OSX**
+    ```
+    brew install go
+    ```
+
+## Source checkout
+First of all, you need to check out the source.
+
+```bash
+git clone https://github.com/icon-project/btp2.git --recurse-submodules
+```
+
+## Build
+
+```bash
+cd ${PROJECT_ROOT}
+make relay
+```
+
+Output binaries are placed under `bin/` directory.
+
+## Docker Image Build
+```bash
+cd ${PROJECT_ROOT}
+make relay-image
+```
+* [Docker Compose example](../docker-compose)
+
+## Relay CLI
+* [Relay command line](relay_cli.md)
+
+## Tutorial
+* [End-to-End Testing Demo](../e2edemo/README.md)
+
+## Relay start
+
+### Create network configuration
+
+```bash
+${PROJECT_ROOT}/bin/relay save ./config/relay_config.json
+```
+* Configuration example
+  * [Icon to Icon configuration](../docker-compose/relay/config/icon_to_icon_config.json)
+  * [Icon to Eth-Bridge configuration](../docker-compose/relay/config/icon_to_hardhat_config.json)
+
+#### Configuration setting
+1. 'relay_config' setting
+[[Relay config]](relay_cli.md#options)
+
+2. 'chains_config' setting
+
+| Key          | Description                                    | 
+|:-------------|:-----------------------------------------------|
+| address      | BTPAddress ( btp://${Network}/${BMC Address} ) |
+| endpoint     | Network endpoint                               |
+| key_store    | Relay keystore                                 |
+| key_password | Relay keystore password                        |
+| type         | BTP2 contract type                             |
+
+#### Relay Start
+```bash
+${PROJECT_ROOT}/bin/relay start --config ./config/relay_config.json
+```
+
 
-## General
-* [Build Guide](build.md)
-* [Tutorial](tutorial.md)
 
-## Management
-* [btpsimple command line](btpsimple_cli.md)