Restructure documentation

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

docs/chapters/docker/index.txt

@@ -0,0 +1,34 @@
+.. index:: Docker
+
+======
+Docker
+======
+
+- Installation: :doc:`install_simple` | :doc:`install_docker_network` | :doc:`docker_compose` | :doc:`start_stop`
+- Setup: :doc:`environment_variables` | :doc:`drivers`
+- Integration: :doc:`accessing_data`
+- Development: :doc:`building` | :doc:`customizing` | :doc:`nightly`
+- Administration: :doc:`backups` | :doc:`upgrading` | :doc:`commands`
+
+
+Docker is a container technology. Containers are a standard unit of software
+that packages up code and all its dependencies.
+
+.. toctree::
+    :hidden:
+
+    install_simple
+    install_docker_network
+    start_stop
+    environment_variables
+    drivers
+    accessing_data
+    backups
+    upgrading
+    building
+    customizing
+    docker_compose
+    nightly
+    commands
+
+