Installs ssh into container, can be used to patch kubernetes pod

install_ssh.sh

# RUN LIKE THIS:
# kubectl cp "install_ssh.sh" "${pod}":/tmp/install_ssh.sh
# kubectl exec -i "${pod}" -- /tmp/install_ssh.sh

#!/bin/bash

if ! [ -d /etc/apt ]; then
  echo "This container OS is not supported"
  exit 1
fi

if [[ $(dpkg-query -W -f='${Status}' openssh-server 2>/dev/null | grep -c "ok installed") -eq 0 ]]; then
  apt-get update && apt-get install -y --no-install-recommends openssh-server
fi
apt-get update && apt-get install -y vim

mkdir -p /var/run/sshd
chown root:root "${HOME}"/.ssh/authorized_keys*
chmod 0600 "${HOME}"/.ssh/authorized_keys*

sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/' /etc/ssh/sshd_config
sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd

service ssh start