Add illustrations, to show files and ports

README.md

@@ -124,6 +124,8 @@ This means that files to be used must be located there.
 
 There is currently no access to any network filesystems.
 
+![files](files.png)
+
 In order to copy files, you can use the command `scp`:
 
 ``` console
@@ -160,6 +162,8 @@ Then you can forward local ports, over to the virtual machine.
 
 From there, they can access any ports published by containers.
 
+![ports](ports.png)
+
 This is done by starting a `ssh` command, as a background process.
 
 ``` console

files.dot

@@ -0,0 +1,20 @@
+digraph G {
+  rankdir=LR;
+  graph [fontname = "Source Sans Pro"];
+  node [fontname = "Source Sans Pro"];
+  edge [fontname = "Source Sans Pro"];
+
+  local [ label="Local\n/path" ];
+  machine [ label="Machine\n/path" ];
+  container [ label="Container\n/path" ];
+  subgraph cluster_VM {
+    rankdir=LR;
+    style=filled;
+    color=lightskyblue;
+    machine container;
+    label = "VirtualBox";
+  }
+  local -> machine [ label="scp" ];
+  machine -> local [ label="sshfs" ];
+  machine -> container [ label="volume" ];
+}

ports.dot

@@ -0,0 +1,20 @@
+digraph G {
+  rankdir=LR;
+  graph [fontname = "Source Sans Pro"];
+  node [fontname = "Source Sans Pro"];
+  edge [fontname = "Source Sans Pro"];
+
+  local [ label="Local\nport" ];
+  machine [ label="Machine\nport" ];
+  container [ label="Container\nport" ];
+  subgraph cluster_VM {
+    rankdir=LR;
+    style=filled;
+    color=lightskyblue;
+    machine container;
+    label = "VirtualBox";
+  }
+  local -> machine [ label="ssh -L" ];
+  machine -> local [ label="ip" ];
+  machine -> container [ label="publish" ];
+}