chore(ci): create multiplatform (amd&arm) image

Currently talos-backup doesn't support ARM nodes and only runs on AMD64
nodes. This enables using talos-backup on arm64 nodes.

Signed-off-by: Ströger Florian <florian@florianstroeger.com>
Signed-off-by: Noel Georgi <git@frezbo.dev>

Author: Preisschild

.github/workflows/ci.yaml

@@ -1,6 +1,6 @@
 # THIS FILE WAS AUTOMATICALLY GENERATED, PLEASE DO NOT EDIT.
 #
-# Generated on 2024-07-03T12:32:21Z by kres 2c4ff8a.
+# Generated on 2024-07-03T13:01:47Z by kres 2c4ff8a.
 
 name: default
 concurrency:
@@ -95,12 +95,14 @@ jobs:
       - name: push-talos-backup
         if: github.event_name != 'pull_request'
         env:
+          PLATFORM: linux/amd64,linux/arm64
           PUSH: "true"
         run: |
           make image-talos-backup
       - name: push-talos-backup-latest
         if: github.event_name != 'pull_request' && github.ref == 'refs/heads/main'
         env:
+          PLATFORM: linux/amd64,linux/arm64
           PUSH: "true"
         run: |
           make image-talos-backup IMAGE_TAG=latest

.kres.yaml

@@ -9,6 +9,12 @@ spec:
       GOOS: linux
       GOARCH: arm64
 ---
+kind: common.Image
+name: image-talos-backup
+spec:
+  extraEnvironment:
+    PLATFORM: linux/amd64,linux/arm64
+---
 kind: auto.CustomSteps
 spec:
   steps: