Added rockcraft.yaml and build workflows

.github/workflows/pull_request.yaml

@@ -0,0 +1,23 @@
+name: Push Multiarch Images
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push-arch-specifics:
+    name: Build Rocks and Push Arch Specific Images
+    uses: canonical/k8s-workflows/.github/workflows/build_rocks.yaml@main
+    with:
+      owner: ${{ github.repository_owner }}
+      trivy-image-config: "trivy.yaml"
+      multiarch-awareness: true
+      cache-action: ${{ (github.event_name == 'push') && 'save' || 'restore' }}
+  build-and-push-multiarch-manifest:
+    name: Combine Rocks and Push Multiarch Manifest
+    uses: canonical/k8s-workflows/.github/workflows/assemble_multiarch_image.yaml@main
+    needs: [build-and-push-arch-specifics]
+    with:
+      rock-metas: ${{ needs.build-and-push-arch-specifics.outputs.rock-metas }}
+      dry-run: ${{ github.event_name != 'push' }}

rockcraft.yaml

@@ -0,0 +1,37 @@
+name: metrics-server
+summary: ROCK for the metrics-server Project.
+description: This ROCK is a drop in replacement for the metrics-server/metrics-server image.
+version: "0.7.0"
+license: Apache-2.0
+
+base: bare
+build-base: ubuntu@22.04
+platforms:
+  amd64:
+  # TODO: Add after workflows support bulding arm64 ROCKs
+  # arm64:
+
+services:
+  metrics-server:
+    override: replace
+    summary: "metrics-server service"
+    startup: enabled
+    command: "/metrics-server [ ]"
+    on-failure: shutdown
+
+entrypoint-service: metrics-server
+
+parts:
+  metrics-server:
+    plugin: nil
+    source: https://github.com/kubernetes-sigs/metrics-server.git
+    source-type: git
+    source-tag: v0.7.0
+    source-depth: 1
+    build-packages:
+      - build-essential
+    build-snaps:
+      - go/1.21/stable
+    override-build: |
+      make
+      cp $CRAFT_PART_BUILD/metrics-server $CRAFT_PART_INSTALL

trivy.yaml

@@ -0,0 +1,3 @@
+timeout: 20m
+scan:
+  offline-scan: true