Bootstrap server to use with ansible

bootstrap-server.sh

#!/usr/bin/env bash
if [ $# -eq 0  ]; then
  echo "please supply a servername: bootstrap-server.sh node.example.com"
  exit 1
fi
username=`whoami`

# copy public rsa key to server for root user
read -r -p "Transfer ssh public keys to server for root? [y/N] " response
if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]; then
  cat ~/.ssh/id_rsa.pub | ssh root@$1 "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys"
  ssh root@$1 "chmod 0700 ~/.ssh && chmod 0644 ~/.ssh/authorized_keys"
fi

# install sudo, add user and add user to sudo group
read -r -p "This will install sudo, and add $username with sudo rights, continue? [y/N] " response
if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]; then
  ssh root@$1 "apt-get update && apt-get install sudo -y && id $username || (adduser $username && usermod -a -G sudo $username)"
fi

# copy public rsa key to server for self
read -r -p "Transfer ssh public keys to server for "$username"? [y/N] " response
if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]; then
  cat ~/.ssh/id_rsa.pub | ssh $1 "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys"
  ssh $1 "chmod 0700 ~/.ssh && chmod 0644 ~/.ssh/authorized_keys"
fi

# install python for ansible
read -r -p "Make host ansible ready? [y/N] " response
if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]; then
  ssh root@$1 "apt-get install -y python python-apt python-pycurl"
fi

# add hostname to ansible_hosts
read -r -p "Add to ansible_hosts? [y/N] " response
if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]; then
  echo "[added]\n$1" >> ansible_hosts
  echo "Added to ansible_hosts, please alter category afterwards!"
fi