docs: docker installation

- both docker and distro package steps
Signed-off-by: Lakshya Singh <lakshay.singh1108@gmail.com>

README.md

@@ -1,5 +1,35 @@
 # VLS Containers
 
+## Installing Docker
+
+### Docker Documentation
+
+Docker Engine is available on a variety of Linux distros, macOS, and Windows 10 through Docker Desktop, and as a static binary installation. Refer to the official [docker documentation](https://docs.docker.com/engine/install/)
+
+- [Ubuntu](https://docs.docker.com/engine/install/ubuntu/)
+- [Fedora](https://docs.docker.com/engine/install/fedora/)
+
+### Distro Packages
+
+Debian/Ubuntu:
+```
+sudo apt install docker.io docker-doc docker-compose containerd runc
+sudo systemctl enable --now docker
+```
+
+Fedora/RHEL:
+```
+sudo dnf install docker docker-compose containerd runc
+sudo systemctl enable --now docker
+```
+
+### Docker Compose Compatibility
+
+- Currently available `docker-compose` package in different linux distributions (debian, ubuntu, fedora, etc) are not up to date, they are still at version `1` which has been deprecated by `docker` with release of version `2`.
+- `docker-compose` version `2` is available through official docker repositories not the distribution ones.
+- Docker Images in this repository work with version 2 and are also __backward compatible__ with version 1.
+- If you are using the distribution installation the `docker compose` command used below has to be changed to `docker-compose` instead.
+
 ## Volume Creation
 
 ```