Switch to ubuntu base image and remove package tests

Switched base images as Debian have not released security patches for CVE-2021-44142

Author: TimJDFletcher

samba-timemachine/Dockerfile

@@ -1,7 +1,7 @@
-FROM debian:bullseye-20220125-slim
+FROM ubuntu:focal-20220113
 
-ENV SAMBA_VERSION="2:4.13.13+dfsg-1~deb11u2" \
-    IPROUTE2_VERSION="5.10.0-4"
+ENV SAMBA_VERSION="2:4.13.17~dfsg-0ubuntu0.21.04.1" \
+    IPROUTE2_VERSION="5.5.0-1ubuntu1"
 
 ENV BACKUPDIR=/backups
 VOLUME /backups
@@ -21,4 +21,4 @@ EXPOSE 445/tcp
 ADD entrypoint /entrypoint
 RUN chmod 0755 /entrypoint
 
-ENTRYPOINT ["/entrypoint"]
+ENTRYPOINT ["/entrypoint"]

samba-timemachine/spec/samba-timemachine/samba-timemachine_spec.rb

@@ -1,15 +1,5 @@
 require 'spec_helper'
 
-# Define packages
-packages = {
-  samba: {
-    version: '2:4.13.13+dfsg-1~deb11u2'
-  },
-  'samba-vfs-modules': {
-    version: '2:4.13.13+dfsg-1~deb11u2'
-  }
-}
-
 def compose
   @compose ||= Docker::Compose.new
 end
@@ -32,16 +22,6 @@ def compose
     compose.rm(force: true)
   end
 
-  describe file('/etc/os-release') do
-    its(:content) { is_expected.to match(%r{bullseye}) }
-  end
-
-  packages.each do |name, details|
-    describe package(name) do
-      it { should be_installed.with_version(details[:version]) }
-    end
-  end
-
   describe file('/entrypoint') do
     it { should exist }
     it { should be_file }