Use almalinux:8 for ppc64le el8 builds as it seems rocky doesn't have that arch

Author: treydock

lib/ood_packaging/build_box.rb

@@ -19,6 +19,10 @@ class OodPackaging::BuildBox
     'amzn2023'     => 'amazonlinux:2023'
   }.freeze
 
+  BASE_IMAGES_ARCH = {
+    'el8-ppc64le' => 'almalinux:8'
+  }.freeze
+
   CODENAMES = {
     'ubuntu-20.04' => 'focal',
     'ubuntu-22.04' => 'jammy',
@@ -98,7 +102,7 @@ def valid_arches
   end
 
   def base_image
-    @base_image ||= BASE_IMAGES[dist]
+    @base_image ||= BASE_IMAGES_ARCH["#{dist}-#{arch}"] || BASE_IMAGES[dist]
   end
 
   def codename

spec/ood_packaging/build_box_spec.rb

@@ -19,6 +19,21 @@
     end
   end
 
+  describe 'base_image' do
+    it 'uses el8 box' do
+      expect(build_box.base_image).to eq('rockylinux:8')
+    end
+
+    context 'with el8 ppc64le' do
+      let(:dist) { 'el8' }
+      let(:arch) { 'ppc64le' }
+
+      it 'uses arch specific box' do
+        expect(build_box.base_image).to eq('almalinux:8')
+      end
+    end
+  end
+
   describe 'build!' do
     before do
       allow(build_box).to receive(:build_gem)