docs: added windows installation guide

build/README.md

@@ -45,3 +45,50 @@ curl -LO $BINARY_URL && \
   tar -xvf kubefirst_${KUBEFIRST_VERSION:1}_linux_amd64.tar.gz -C /usr/local/bin/ && \
   chmod +x /usr/local/bin/kubefirst
 ```
+
+
+##  Windows Manual Installation
+
+- Step 1:
+
+Ensure you completely installed Windows WSL 
+
+- Step2:
+
+Run the following commands to export and set the necessary environment variables for the installation
+```shell
+export KUBEFIRST_VERSION=`curl https://github.com/kubefirst/kubefirst/releases/latest  -Ls -o /dev/null -w %{url_effective} | grep -oE "[^/]+$"`
+```
+
+```shell
+export BINARY_URL="https://github.com/kubefirst/kubefirst/releases/download/${KUBEFIRST_VERSION}/kubefirst_${KUBEFIRST_VERSION:1}_linux_amd64.tar.gz"
+```
+- Step 3:
+
+Now the complete installation 
+```shell
+curl -LO $BINARY_URL && \
+  tar -xvf kubefirst_${KUBEFIRST_VERSION:1}_linux_amd64.tar.gz -C /usr/local/bin/ && \
+  chmod +x /usr/local/bin/kubefirst
+```
+
+If you have issues using a single line commands as above, try separating the commands as below to unzip and move the executable in to the right directory
+```shell
+tar -xvf kubefirst_${KUBEFIRST_VERSION:1}_linux_amd64.tar.gz
+```
+
+```shell
+mv kubefirst_${KUBEFIRST_VERSION:1}_linux_amd64.tar.gz /usr/local/bin/
+```
+
+```shell
+  chmod +x /usr/local/bin/kubefirst
+```
+
+- Step 4:
+
+To run this for a project you need a docker daemon running, install and start a docker desktop will serve the purpose. Then run the below code to create a project
+
+```shell
+kubefirst k3d create
+```