Merge pull request #447 from jodh-intel/fix-debian-docker-install

Fix debian docker install

install/docker/centos-docker-install.md

@@ -65,4 +65,4 @@
    ```
 
    The previous command shows details of the kernel version running inside the
-    container, which is different from the host kernel version.
+   container, which is different to the host kernel version.

install/docker/debian-docker-install.md

@@ -31,7 +31,7 @@ a. sysVinit
     
     - with sysVinit,  docker config is stored in `/etc/default/docker`, edit the options similar to the following: 
        
-    ```
+    ```sh
     $ sudo sh -c "echo '# specify docker runtime for kata-containers
     DOCKER_OPTS=\"-D --add-runtime kata-runtime=/usr/bin/kata-runtime --default-runtime=kata-runtime\"' >> /etc/default/docker"
     ```
@@ -47,34 +47,34 @@ b. systemd
     EOF
     ```
 
-c. systemd Docker `daemon.json`
+c. Docker `daemon.json`
 
     Add the following definitions to `/etc/docker/daemon.json`:
 
-    ```bash
-    $ sudo sh -c "echo '{
-      \"default-runtime\": \"kata-runtime\",
-      \"runtimes\": {
-        \"kata-runtime\": {
-          \"path\": \"/usr/bin/kata-runtime\"
+    ```json
+    {
+      "default-runtime": "kata-runtime",
+      "runtimes": {
+        "kata-runtime": {
+          "path": "/usr/bin/kata-runtime"
+        }
       }
     }
-    }' >> /etc/docker/daemon.json"
     ```
 
 3. Restart the Docker systemd service with one of the following (depending on init choice):
 
     a. sysVinit
   
-    ```bash
+    ```sh
     $ sudo /etc/init.d/docker stop
     $ sudo /etc/init.d/docker start
     ```
 
-    to watch for errors:
+    To watch for errors:
 
-    ```bash
-    tail -f /var/log/docker.log
+    ```sh
+    $ tail -f /var/log/docker.log
     ```
     
     b. systemd
@@ -94,6 +94,3 @@ c. systemd Docker `daemon.json`
 
    The previous command shows details of the kernel version running inside the
    container, which is different to the host kernel version.
-
-   
-   

install/docker/sles-docker-install.md

@@ -20,7 +20,7 @@
    For more information on installing Docker please refer to the
    [Docker Guide](https://www.suse.com/documentation/sles-12/singlehtml/book_sles_docker/book_sles_docker.html).
 
-2. Configure Docker to use Kata Containers with one of the following methods:
+2. Configure Docker to use Kata Containers by default with one of the following methods:
 
    1. systemd
 

install/ubuntu-installation-guide.md

@@ -1,6 +1,7 @@
 # Install Kata Containers on Ubuntu
 
 1. Install the Kata Containers components with the following commands:
+
    ```bash
    $ ARCH=$(arch)
    $ BRANCH="${BRANCH:-master}"