Fix formatting

node_client.asciidoc

@@ -59,12 +59,18 @@ Docker containers are often optimized to be small, i.e. occupy the minimum disk
 
 You can find the latest container definitions and build configurations in the book's repository under the +code/docker+ folder. Each container is in a separate folder as can be seen below:
 
-//// $ tree -F --charset=asciii  code
+[tree]
+----
+$ tree -F --charset=asciii  code
+----
+
 [docker-dir-list]
 ----
 code
 `-- docker/
+    |-- Makefile
     |-- bitcoind/
+    |   |-- Dockerfile
     |   |-- bashrc
     |   |-- bitcoind/
     |   |   |-- bitcoin.conf
@@ -73,37 +79,35 @@ code
     |   |       |-- demo_mnemonic.txt
     |   |       `-- demo_privkey.txt
     |   |-- bitcoind-entrypoint.sh
-    |   |-- Dockerfile
     |   `-- mine.sh*
     |-- c-lightning/
+    |   |-- Dockerfile
     |   |-- bashrc
     |   |-- c-lightning-entrypoint.sh
-    |   |-- Dockerfile
     |   |-- fund-c-lightning.sh
     |   |-- lightningd/
     |   |   `-- config
     |   |-- logtail.sh
     |   `-- wait-for-bitcoind.sh
+    |-- docker-compose.yml
     |-- eclair/
-    |   |-- bashrc
     |   |-- Dockerfile
+    |   |-- bashrc
     |   |-- eclair/
     |   |   `-- eclair.conf
     |   |-- eclair-entrypoint.sh
     |   |-- logtail.sh
     |   `-- wait-for-bitcoind.sh
-    |-- lnbook-app/
-    |   |-- docker-compose.yml
-    |   `-- setup-channels.sh
-    `-- lnd/
-        |-- bashrc
-        |-- Dockerfile
-        |-- fund-lnd.sh
-        |-- lnd/
-        |   `-- lnd.conf
-        |-- lnd-entrypoint.sh
-        |-- logtail.sh
-        `-- wait-for-bitcoind.sh
+    |-- lnd/
+    |   |-- Dockerfile
+    |   |-- bashrc
+    |   |-- fund-lnd.sh
+    |   |-- lnd/
+    |   |   `-- lnd.conf
+    |   |-- lnd-entrypoint.sh
+    |   |-- logtail.sh
+    |   `-- wait-for-bitcoind.sh
+    `-- setup-channels.sh
 ----
 
 ==== Installing Docker