Work around tab / codelang formatting issues

Rather than tabs with a codelang set, use tabs containing Markdown

content/en/docs/setup/production-environment/container-runtimes.md

@@ -21,8 +21,8 @@ A flaw was found in the way runc handled system file descriptors when running co
 A malicious container could use this flaw to overwrite contents of the runc binary and
 consequently run arbitrary commands on the container host system.
 
-Please refer to this link for more information about this issue
+Please refer to [CVE-2019-5736](https://access.redhat.com/security/cve/cve-2019-5736) for more
-[cve-2019-5736 : runc vulnerability ] (https://access.redhat.com/security/cve/cve-2019-5736)
+information about the issue.
 {{< /caution >}}
 
 ### Applicability
@@ -70,29 +70,39 @@ Keep track of the latest verified Docker version in the Kubernetes release notes
 Use the following commands to install Docker on your system:
 
 {{< tabs name="tab-cri-docker-installation" >}}
-{{< tab name="Ubuntu 16.04+" codelang="bash" >}}
+{{< tab name="Ubuntu 16.04+" >}}
-# Install Docker CE
+
+```shell
+# (Install Docker CE)
 ## Set up the repository:
 ### Install packages to allow apt to use a repository over HTTPS
 apt-get update && apt-get install -y \
   apt-transport-https ca-certificates curl software-properties-common gnupg2
+```
 
-### Add Docker’s official GPG key
+```shell
+# Add Docker’s official GPG key:
 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
+```
 
-### Add Docker apt repository.
+```shell
+# Add the Docker apt repository:
 add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
+```
 
-## Install Docker CE.
+```shell
+# Install Docker CE
 apt-get update && apt-get install -y \
   containerd.io=1.2.13-1 \
   docker-ce=5:19.03.8~3-0~ubuntu-$(lsb_release -cs) \
   docker-ce-cli=5:19.03.8~3-0~ubuntu-$(lsb_release -cs)
+```
 
-# Setup daemon.
+```shell
+# Set up the Docker daemon
 cat > /etc/docker/daemon.json <<EOF
 {
   "exec-opts": ["native.cgroupdriver=systemd"],
@@ -103,34 +113,48 @@ cat > /etc/docker/daemon.json <<EOF
   "storage-driver": "overlay2"
 }
 EOF
+```
 
+```shell
 mkdir -p /etc/systemd/system/docker.service.d
+```
 
-# Restart docker.
+```shell
+# Restart Docker
 systemctl daemon-reload
 systemctl restart docker
+```
 {{< /tab >}}
-{{< tab name="CentOS/RHEL 7.4+" codelang="bash" >}}
+{{< tab name="CentOS/RHEL 7.4+" >}}
 
-# Install Docker CE
+```shell
+# (Install Docker CE)
 ## Set up the repository
-### Install required packages.
+### Install required packages
 yum install -y yum-utils device-mapper-persistent-data lvm2
+```
 
-### Add Docker repository.
+```shell
+## Add the Docker repository
 yum-config-manager --add-repo \
   https://download.docker.com/linux/centos/docker-ce.repo
+```
 
-## Install Docker CE.
+```shell
+# Install Docker CE
 yum update -y && yum install -y \
   containerd.io-1.2.13 \
   docker-ce-19.03.8 \
   docker-ce-cli-19.03.8
+```
 
-## Create /etc/docker directory.
+```shell
+## Create /etc/docker
 mkdir /etc/docker
+```
 
-# Setup daemon.
+```shell
+# Set up the Docker daemon
 cat > /etc/docker/daemon.json <<EOF
 {
   "exec-opts": ["native.cgroupdriver=systemd"],
@@ -144,12 +168,17 @@ cat > /etc/docker/daemon.json <<EOF
   ]
 }
 EOF
+```
 
+```shell
 mkdir -p /etc/systemd/system/docker.service.d
+```
 
+```shell
 # Restart Docker
 systemctl daemon-reload
 systemctl restart docker
+```
 {{< /tab >}}
 {{< /tabs >}}
 
@@ -173,7 +202,7 @@ For more information, see the [CRI-O compatiblity matrix](https://github.com/cri
 modprobe overlay
 modprobe br_netfilter
 
-# Setup required sysctl params, these persist across reboots.
+# Set up required sysctl params, these persist across reboots.
 cat > /etc/sysctl.d/99-kubernetes-cri.conf <<EOF
 net.bridge.bridge-nf-call-iptables  = 1
 net.ipv4.ip_forward                 = 1
@@ -184,55 +213,79 @@ sysctl --system
 ```
 
 {{< tabs name="tab-cri-cri-o-installation" >}}
-{{< tab name="Debian" codelang="bash" >}}
+{{< tab name="Debian" >}}
+
+```shell
 # Debian Unstable/Sid
 echo 'deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Unstable/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
 wget -nv https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/Debian_Unstable/Release.key -O- | sudo apt-key add -
+```
 
+```shell
 # Debian Testing
 echo 'deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Testing/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
 wget -nv https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/Debian_Testing/Release.key -O- | sudo apt-key add -
+```
 
+```shell
 # Debian 10
 echo 'deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
 wget -nv https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/Debian_10/Release.key -O- | sudo apt-key add -
+```
 
+```shell
 # Raspbian 10
 echo 'deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Raspbian_10/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
 wget -nv https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/Raspbian_10/Release.key -O- | sudo apt-key add -
+```
 
-# Install CRI-O
+and then install CRI-O:
+```shell
 sudo apt-get install cri-o-1.17
+```
 {{< /tab >}}
 
-{{< tab name="Ubuntu 18.04, 19.04 and 19.10" codelang="bash" >}}
+{{< tab name="Ubuntu 18.04, 19.04 and 19.10" >}}
-# Setup repository
+
+```shell
+# Configure package repository
 . /etc/os-release
 sudo sh -c "echo 'deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/x${NAME}_${VERSION_ID}/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list"
 wget -nv https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/x${NAME}_${VERSION_ID}/Release.key -O- | sudo apt-key add -
 sudo apt-get update
+```
 
+```shell
 # Install CRI-O
 sudo apt-get install cri-o-1.17
+```
 {{< /tab >}}
 
-{{< tab name="CentOS/RHEL 7.4+" codelang="bash" >}}
+{{< tab name="CentOS/RHEL 7.4+" >}}
+
+```shell
 # Install prerequisites
 curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/CentOS_7/devel:kubic:libcontainers:stable.repo
 curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable:cri-o:{{< skew latestVersion >}}.repo https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable:cri-o:{{< skew latestVersion >}}/CentOS_7/devel:kubic:libcontainers:stable:cri-o:{{< skew latestVersion >}}.repo
+```
 
+```shell
 # Install CRI-O
 yum install -y cri-o
+```
 {{< /tab >}}
 
-{{< tab name="openSUSE Tumbleweed" codelang="bash" >}}
+{{< tab name="openSUSE Tumbleweed" >}}
+
+```shell
 sudo zypper install cri-o
+```
 {{< /tab >}}
 {{< /tabs >}}
 
 ### Start CRI-O
 
-```
+```shell
 systemctl daemon-reload
 systemctl start crio
 ```
@@ -270,51 +323,72 @@ sysctl --system
 ### Install containerd
 
 {{< tabs name="tab-cri-containerd-installation" >}}
-{{< tab name="Ubuntu 16.04" codelang="bash" >}}
+{{< tab name="Ubuntu 16.04" >}}
-# Install containerd
+
+```shell
+# (Install containerd)
 ## Set up the repository
 ### Install packages to allow apt to use a repository over HTTPS
 apt-get update && apt-get install -y apt-transport-https ca-certificates curl software-properties-common
+```
 
-### Add Docker’s official GPG key
+```shell
+## Add Docker’s official GPG key
 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
+```
 
-### Add Docker apt repository.
+```shell
+## Add Docker apt repository.
 add-apt-repository \
     "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
     $(lsb_release -cs) \
     stable"
+```
 
+```shell
 ## Install containerd
 apt-get update && apt-get install -y containerd.io
+```
 
+```shell
 # Configure containerd
 mkdir -p /etc/containerd
 containerd config default > /etc/containerd/config.toml
+```
 
+```shell
 # Restart containerd
 systemctl restart containerd
+```
 {{< /tab >}}
-{{< tab name="CentOS/RHEL 7.4+" codelang="bash" >}}
+{{< tab name="CentOS/RHEL 7.4+" >}}
-# Install containerd
+
+```shell
+# (Install containerd)
 ## Set up the repository
 ### Install required packages
 yum install -y yum-utils device-mapper-persistent-data lvm2
 
-### Add docker repository
+```shell
+## Add docker repository
 yum-config-manager \
     --add-repo \
     https://download.docker.com/linux/centos/docker-ce.repo
 
+```shell
 ## Install containerd
 yum update -y && yum install -y containerd.io
 
-# Configure containerd
+```shell
+## Configure containerd
 mkdir -p /etc/containerd
 containerd config default > /etc/containerd/config.toml
+```
 
+```shell
 # Restart containerd
 systemctl restart containerd
+```
 {{< /tab >}}
 {{< /tabs >}}