Feature: ARM builds (#821)

* Add native ARM runner

* Switch to arch-agnostic manifest digest

* Set correct latest tag

.github/workflows/publish-docker.yml

@@ -3,7 +3,12 @@ on:
   workflow_call:
 jobs:
   publish:
-    runs-on: buildjet-4vcpu-ubuntu-2204
+    strategy:
+      fail-fast: true # when a job fails, all remaining ones will be cancelled
+      matrix:
+        runs-on: [buildjet-4vcpu-ubuntu-2204, buildjet-4vcpu-ubuntu-2204-arm]
+    name: ${{matrix.runs-on}}
+    runs-on: ${{matrix.runs-on}}
     outputs:
       version: ${{ steps.get_version.outputs.version }}
       short_sha: ${{ steps.get_commit.outputs.sha_short }}
@@ -36,6 +41,9 @@ jobs:
             echo "Invalid reference: ${GITHUB_REF}"
             exit 1
           fi
+          if [[ ${{matrix.runs-on}} == *-arm ]]; then
+            IMAGE_TAG="${IMAGE_TAG}-arm"
+          fi
           echo "::set-output name=version::${IMAGE_TAG}"
       - name: 🔢 Get the commit hash
         id: get_commit
@@ -65,8 +73,12 @@ jobs:
       - name: 🐙 Push 'latest' to GitHub Container Registry
         if: startsWith(github.ref, 'refs/tags/v.docker')
         run: |
-          docker tag release_build_image $REGISTRY/$REPOSITORY:latest
-          docker push $REGISTRY/$REPOSITORY:latest
+          LATEST=latest
+          if [[ ${{matrix.runs-on}} == *-arm ]]; then
+            LATEST="${LATEST}-arm"
+          fi
+          docker tag release_build_image $REGISTRY/$REPOSITORY:$LATEST
+          docker push $REGISTRY/$REPOSITORY:$LATEST
         env:
           REGISTRY: ghcr.io/triggerdotdev
           REPOSITORY: trigger.dev