Add docker install script

windows/install-docker-in-wsl.sh

@@ -1,5 +1,43 @@
 #!/usr/bin/env bash
 
+installDocker() {
+	local continue
+	local distribution
+	local codename
+
+	echo "Installing prerequisites for Docker"
+	sudo apt update && sudo apt install -y apt-transport-https ca-certificates curl software-properties-common
+
+	echo "Fetching GPG key"
+	curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
+
+	echo "Verify the fingerprint is correct:"
+	sudo apt-key fingerprint 0EBFCD88
+
+	echo "Does the fingerprint match [9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88] ? [y]/n"
+	read continue
+
+	[[ "${continue}" != "" ]] && [[ "${continue}" = "y" ]] && [[ "${continue}" = "Y" ]] && return 137
+
+	distribution=$(lsb_release -is | tr '[:upper:]' '[:lower:]')
+	codename=$(lsb_release -cs)
+   	sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/${distribution} ${codename} stable"
+
+   	sudo apt update && sudo apt install -y docker-ce
+
+   	[[ $? -ne 0 ]] && return 137
+
+   	echo "Do you want to run docker commands without sudo? This will make your system less secure, effectively granting your user root privileges through the use of docker"
+   	echo "y/[n]"
+	read continue
+
+	[[ "${continue}" != "" ]] && [[ "${continue}" = "y" ]] && [[ "${continue}" = "Y" ]] && return 0
+
+	sudo usermod -aG docker ${USER}
+
+	return 0
+}
+
 installGo() {
 	echo "Installing golang"
 	echo "Fetching latest tags from github..."
@@ -71,9 +109,9 @@ installRelay() {
 	sudo ln -s /mnt/c/Users/${USER}/go/bin/npiperelay.exe /usr/local/bin/npiperelay.exe
 	[[ $? -ne 0 ]] && echo "Could not link the binary" && return 137
 
-	echo "Installing socat and docker.io"
+	echo "Installing socat"
 	sudo apt update
-	sudo apt install -y socat docker.io
+	sudo apt install -y socat
 	[[ $? -ne 0 ]] && echo "Could not install the requirements" && return 137
 
 	return 0
@@ -184,6 +222,9 @@ installDockerCompose() {
 }
 
 initialize() {
+	installDocker
+	[[ $? -ne 0 ]] && echo "Could not install Docker" && return 137
+
 	installGo
 	[[ $? -ne 0 ]] && echo "Could not install Go" && return 137