dockerfile fix

README.md

@@ -11,7 +11,6 @@ Here are some example snippets to help you get started creating a container.
 ## docker-compose
 
 ```yaml
-version: "3"
 services:
   electrum:
     image: bitdeals/electrum
@@ -19,8 +18,8 @@ services:
       - ELECTRUM_TESTNET=0
       - ELECTRUM_API_USER=<username>
       - ELECTRUM_API_PASSWORD=<password>
-    ports:
-      - 7000:7000
+    expose:
+      - "7000"
 ```
 
 ## docker cli
@@ -28,8 +27,8 @@ services:
 ```sh
 docker run -d \
   -e ELECTRUM_TESTNET=0 \
-  -e ELECTRUM_API_USER=api \
-  -e ELECTRUM_API_PASSWORD=changeme \
+  -e ELECTRUM_API_USER=electrum_api_user \
+  -e ELECTRUM_API_PASSWORD=electrum_api_password \
   -p 127.0.0.1:7000:7000 \
   bitdeals/electrum
 ```
@@ -42,8 +41,8 @@ Container images are configured using parameters passed at runtime.
 |:--------|:-------|
 |-p 7000|JSON-RPC API port TCP|
 |-e ELECTRUM_TESTNET=|Set 1 to enable bitcoin testnet mode. Default: `0`|
-|-e ELECTRUM_API_USER=|JSON-RPC API user. Default: `electrum_api`|
-|-e ELECTRUM_API_PASSWORD=|JSON-RPC API password. Default: `electrum_password`|
+|-e ELECTRUM_API_USER=|JSON-RPC API user. Default: `electrum_api_user`|
+|-e ELECTRUM_API_PASSWORD=|JSON-RPC API password. Default: `electrum_api_password`|
 |-e USER_UID=|Electrum user id. Default: `2000`|
 |-e USER_GID=|Electrum user gid. Default: `2000`|