extend quickstart script to support rpm based distro.

Most of the steps for installation, configuration and running of
firecracker containerd on rpm based distro is simlar to debian.
We separate out the distro specific part to a separate script in the
quickstart document and added installation steps that differ in rpm
based distros e.g. Amazon Linux 2.

Signed-off-by: Alakesh Haloi <[email protected]>

Author: alakesh

docs/quickstart.md

@@ -20,8 +20,8 @@ files into `/usr/local/bin`.
    on [this page](https://wiki.debian.org/Cloud/AmazonEC2Image/Buster).
    If you need help launching an EC2 instance, see the
    [EC2 getting started guide](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EC2_GetStarted.html).
-3. Run the script below to download and install all the required components.
-   This script expects to be run from your `$HOME` directory.
+3. Run the script below to download and install all the required dependencies on a debian based instance.
+   Alternate steps for rpm based instance is provided as well. This script expects to be run from your `$HOME` directory.
 
 ```bash
 #!/bin/bash
@@ -62,6 +62,51 @@ sudo DEBIAN_FRONTEND=noninteractive apt-get \
      docker-ce aufs-tools-
 sudo usermod -aG docker $(whoami)
 
+# Install device-mapper
+sudo DEBIAN_FRONTEND=noninteractive apt-get install -y dmsetup
+```
+
+A similar script to install dependencies for rpm based linux distro e.g. Amazon Linux 2 can be found here
+
+<details>
+
+```bash
+#!/bin/bash
+
+cd ~
+
+# Install git, Go 1.13, make, curl
+sudo yum -y update
+sudo yum -y install \
+  golang \
+  make \
+  git \
+  curl \
+  e2fsprogs \
+  util-linux \
+  bc \
+  gnupg
+
+
+# Amazon Linux 2 installs go binary is installed in /usr/bin. So no PATH changes required.
+
+cd ~
+
+# Install Docker CE
+# Docker CE includes containerd, but we need a separate containerd binary, built
+# in a later step
+sudo yum -y update
+sudo amazon-linux-extras install -y  docker
+sudo usermod -aG docker $(whoami)
+
+sudo yum -y install device-mapper
+```
+</details>
+
+4. Now run the following script below to download and install firecracker containerd.
+
+```bash
+#!/bin/bash
 cd ~
 
 # Check out firecracker-containerd and build it.  This includes:
@@ -76,7 +121,6 @@ cd ~
 #   access to networks available on the host
 git clone https://github.com/firecracker-microvm/firecracker-containerd.git
 cd firecracker-containerd
-sudo DEBIAN_FRONTEND=noninteractive apt-get install -y dmsetup
 sg docker -c 'make all image firecracker'
 sudo make install install-firecracker demo-network
 
@@ -174,13 +218,13 @@ sudo tee /etc/containerd/firecracker-runtime.json <<EOF
 EOF
 ```
 
-4. Open a new terminal and start `firecracker-containerd` in the foreground
+5. Open a new terminal and start `firecracker-containerd` in the foreground
 
 ```bash
 sudo firecracker-containerd --config /etc/firecracker-containerd/config.toml
 ```
 
-5. Open a new terminal, pull an image, and run a container!
+6. Open a new terminal, pull an image, and run a container!
 
 ```bash
 sudo firecracker-ctr --address /run/firecracker-containerd/containerd.sock \