diff --git a/Doc/Sdi/docker.xml b/Doc/Sdi/docker.xml
index 0ebf256ad416ba0ef39587d0835352c997763bfa..997a6d7cdba57a9540d0c394e1e59f21a0b2fcdb 100644
--- a/Doc/Sdi/docker.xml
+++ b/Doc/Sdi/docker.xml
@@ -301,12 +301,29 @@ Deleted: sha256:2c833f307fd8f18a378b71d3c43c575fabdb88955a2198662938ac2a08a99928
       <figure xml:id="sdiDocker_figListContainer">
         <title>List running containers</title>
 
-        <screen>&gt; docker ps -a
+        <screen>&gt; docker ps -a  <emphasis role="red"># show stopped containers as well</emphasis>
 CONTAINER ID  IMAGE      COMMAND                ... PORTS                 NAMES
 517e3dba4887  nextcloud  "/entrypoint.sh apac…" ... 0.0.0.0:8080-&gt;80/tcp  <emphasis
             role="red">nc13</emphasis></screen>
       </figure>
 
+      <figure xml:id="sdiDocker_enterRunningContainer">
+        <title>Enter running container</title>
+
+        <screen>&gt; docker exec -it nextcloud_db_1 /bin/bash
+# ls -al
+total 84
+drwxr-xr-x   1 root root 4096 Jun 20 09:28 .
+drwxr-xr-x   1 root root 4096 Jun 20 09:28 ..
+-rwxr-xr-x   1 root root    0 Jun 20 09:28 .dockerenv
+drwxr-xr-x   1 root root 4096 May 25 20:20 bin
+drwxr-xr-x   2 root root 4096 Nov 19  2017 boot
+drwxr-xr-x   5 root root  340 Jun 20 09:28 dev
+drwxr-xr-x   2 root root 4096 Apr 30 15:37 docker-entrypoint-initdb.d
+lrwxrwxrwx   1 root root   34 May 25 20:20 docker-entrypoint.sh -&gt; usr/local/bin/docker-entrypoint.sh
+...</screen>
+      </figure>
+
       <figure xml:id="sdiDocker_figKillProcess">
         <title>Remove container</title>
 
@@ -317,6 +334,49 @@ nc13</screen>
 CONTAINER ID   IMAGE       COMMAND             CREATED      STATUS                   ... NAMES</screen>
       </figure>
     </section>
+
+    <section xml:id="sdiDocker_volumes_sect">
+      <title>Volumes</title>
+
+      <figure xml:id="sdiDocker_listVolumes">
+        <title>List volumes</title>
+
+        <informaltable border="0">
+          <tr>
+            <td valign="top"><screen>&gt; docker volume ls
+DRIVER              VOLUME NAME
+local               nextcloud_db
+local               nextcloud_nextcloud</screen></td>
+
+            <td valign="top"><screen># ls -al /var/lib/docker/volumes
+total 40
+drwx------  4 root root  4096 Jun 20 11:13 .
+drwx--x--x 14 root root  4096 Jun 20 09:40 ..
+-rw-------  1 root root 32768 Jun 20 11:13 metadata.db
+drwxr-xr-x  3 root root  4096 Jun 20 11:13 nextcloud_db
+drwxr-xr-x  3 root root  4096 Jun 20 11:13 nextcloud_nextcloud</screen></td>
+          </tr>
+        </informaltable>
+      </figure>
+
+      <figure xml:id="sdiDocker_listOrphaneVolumes">
+        <title>List orphaned volumes</title>
+
+        <screen>&gt; docker volume ls <emphasis role="red">-f dangling=true</emphasis>
+DRIVER              VOLUME NAME
+local               nextcloud_db
+local               nextcloud_nextcloud</screen>
+      </figure>
+
+      <figure xml:id="sdiDocker_removeVolume">
+        <title>Remove volumes</title>
+
+        <screen>&gt; docker volume rm nextcloud_db nextcloud_nextcloud
+nextcloud_db
+nextcloud_nextcloud
+</screen>
+      </figure>
+    </section>
   </section>
 
   <section xml:id="sdiDocker_sect_exercises">
@@ -325,6 +385,82 @@ CONTAINER ID   IMAGE       COMMAND             CREATED      STATUS
     <para>In this exercise you are about to replace your package based
     <productname>Nextcloud</productname> installation by a
     <productname>Docker</productname> container based on an already existing
-    image.</para>
+    image. The image is being described at:</para>
+
+    <blockquote>
+      <para><uri
+      xlink:href="https://github.com/nextcloud/docker">https://github.com/nextcloud/docker</uri></para>
+    </blockquote>
+
+    <section xml:id="sdiDocker_installNcSimple">
+      <title>The simple way: Using SQLite</title>
+
+      <orderedlist>
+        <listitem>
+          <para>Prepare your system for using docker.</para>
+        </listitem>
+
+        <listitem>
+          <para>Read the <link
+          xlink:href="https://github.com/nextcloud/docker">Nextcloud docker
+          image documentation</link>.</para>
+        </listitem>
+
+        <listitem>
+          <para>Pull the <code>nextcloud</code> container and start it
+          according to the documentation mapping port 80 to 8080 of your host
+          system.</para>
+
+          <para>Use <command>ssh ... -L 8080:localhost:8080</command>
+          forwarding the port in question to your local system and direct your
+          web browser to <uri
+          xlink:href="http://localhost:8080">http://localhost:8080</uri>.</para>
+        </listitem>
+
+        <listitem>
+          <para>Continue the installation by entering admin/admin for username
+          and password.</para>
+        </listitem>
+      </orderedlist>
+    </section>
+
+    <section xml:id="sdiDocker_installNcMaria">
+      <title>The real McCoy: Using <productname>Mariadb</productname></title>
+
+      <para><productname>SQLite</productname> is not appropriate for (larger)
+      production systems. We thus replace it by a
+      <productname>mariadb</productname> service.</para>
+
+      <orderedlist>
+        <listitem>
+          <para>Drop the existing containers among with their volumes.</para>
+        </listitem>
+
+        <listitem>
+          <para>Follow <uri
+          xlink:href="https://github.com/nextcloud/docker#user-content-base-version---apache">https://github.com/nextcloud/docker#user-content-base-version---apache</uri>.
+          Create the proposed <filename>docker-compose.yml</filename> file.
+          Enter require credentials and start the container using <command
+          xlink:href="https://docs.docker.com/compose">docker-compose</command>
+          <parameter>up</parameter>.</para>
+        </listitem>
+
+        <listitem>
+          <para>This time we choose <productname>Mariadb</productname> as
+          database server. Connect to <uri
+          xlink:href="http://localhost:8080">http://localhost:8080</uri>
+          again. Use the database server's container ID as hostname parameter
+          allowing for access by the <productname>nextcloud</productname>
+          container. Then fill in the remaining required connection parameter
+          values.</para>
+        </listitem>
+
+        <listitem>
+          <para>Now configure <uri>ldap://ldap1.hdm-stuttgart.de</uri> as your
+          credential provider like you did in your regular
+          <productname>Nextcloud</productname> installation before.</para>
+        </listitem>
+      </orderedlist>
+    </section>
   </section>
 </chapter>