fix: Remove use of DSA keys due to openssh deprecation

Signed-off-by: Jeff Neel <10672501+jeff350@users.noreply.github.com>

Author: jeff350

lib/kitchen/docker/helpers/dockerfile_helper.rb

@@ -57,7 +57,6 @@ def arch_platform
             RUN pacman-db-upgrade
             RUN pacman --noconfirm -Syu openssl openssh sudo curl
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -A -t rsa -f /etc/ssh/ssh_host_rsa_key
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -A -t dsa -f /etc/ssh/ssh_host_dsa_key
             RUN echo >/etc/security/limits.conf
           CODE
         end
@@ -82,7 +81,6 @@ def fedora_platform
             RUN dnf clean all
             RUN dnf install -y sudo openssh-server openssh-clients which curl
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
           CODE
         end
 
@@ -91,7 +89,6 @@ def gentoo_platform
             RUN emerge-webrsync
             RUN emerge --quiet --noreplace net-misc/openssh app-admin/sudo
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -A -t rsa -f /etc/ssh/ssh_host_rsa_key
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -A -t dsa -f /etc/ssh/ssh_host_dsa_key
           CODE
         end
 
@@ -100,7 +97,6 @@ def gentoo_paludis_platform
             RUN cave sync
             RUN cave resolve -zx net-misc/openssh app-admin/sudo
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -A -t rsa -f /etc/ssh/ssh_host_rsa_key
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -A -t dsa -f /etc/ssh/ssh_host_dsa_key
           CODE
         end
 
@@ -118,7 +114,6 @@ def rhel_platform
             RUN yum clean all
             RUN yum install -y sudo openssh-server openssh-clients which curl
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
           CODE
         end
 
@@ -128,7 +123,6 @@ def centosstream_platform
             RUN yum clean all
             RUN yum install -y sudo openssh-server openssh-clients which
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
           CODE
         end
 
@@ -138,7 +132,6 @@ def almalinux_platform
             RUN yum clean all
             RUN yum install -y sudo openssh-server openssh-clients which
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
           CODE
         end
 
@@ -148,7 +141,6 @@ def rockylinux_platform
             RUN yum clean all
             RUN yum install -y sudo openssh-server openssh-clients which
             RUN [ -f "/etc/ssh/ssh_host_rsa_key" ] || ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
-            RUN [ -f "/etc/ssh/ssh_host_dsa_key" ] || ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
           CODE
         end
 

test/Dockerfile

@@ -2,7 +2,6 @@ FROM centos:7
 RUN yum clean all
 RUN yum install -y sudo openssh-server openssh-clients which curl htop
 RUN ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
-RUN ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
 RUN mkdir -p /var/run/sshd
 RUN useradd -d /home/<%= @username %> -m -s /bin/bash <%= @username %>
 RUN echo <%= "#{@username}:#{@password}" %> | chpasswd