Switch to public GitHub runner and gha cache

.github/workflows/docker-publish.yml

@@ -25,7 +25,7 @@ env:
 jobs:
   build:
 
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     permissions:
       contents: read
       packages: write
@@ -101,8 +101,8 @@ jobs:
           # https://github.com/docker/setup-qemu-action#about
           # platforms: linux/amd64,linux/arm64,linux/riscv64,linux/ppc64le,linux/s390x,linux/386,linux/mips64le,linux/mips64,linux/arm/v7,linux/arm/v6
           platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v6
-          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-from: type=gha
-          cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
+          cache-to: type=gha,mode=max
 
       # Sign the resulting Docker image digest except on PRs.
       # This will only write to the public Rekor transparency log when the Docker
@@ -120,7 +120,8 @@ jobs:
       # Temp fix
       # https://github.com/docker/build-push-action/issues/252
       # https://github.com/moby/buildkit/issues/1896
-      - name: Move cache
+      # INFO: MikaelElkiaer: Obsolete when using gha cache exporter
-        run: |
+      # - name: Move cache
-          rm -rf /tmp/.buildx-cache
+      #   run: |
-          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+      #     rm -rf /tmp/.buildx-cache
+      #     mv /tmp/.buildx-cache-new /tmp/.buildx-cache