CI: add actuated-arm64-4cpu-12gb

See <https://actuated.dev/blog/arm-ci-cncf-ampere>.
Thanks to Alex Ellis and Equinix.

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, ubuntu-22.04]
+        os: [ubuntu-20.04, ubuntu-22.04, actuated-arm64-4cpu-12gb]
         go-version: [1.20.x, 1.21.x]
         rootless: ["rootless", ""]
         race: ["-race", ""]
@@ -40,6 +40,15 @@ jobs:
             criu: criu-dev
           - dmz: runc_nodmz
             os: ubuntu-20.04
+          - go-version: 1.20.x
+            os: actuated-arm64-4cpu-12gb
+          - race: "-race"
+            os: actuated-arm64-4cpu-12gb
+          - criu: criu-dev
+            os: actuated-arm64-4cpu-12gb
+          - dmz: runc_nodmz
+            os: actuated-arm64-4cpu-12gb
+
     runs-on: ${{ matrix.os }}
 
     steps:

README.md

@@ -6,6 +6,7 @@
 [![gha/validate](https://github.com/opencontainers/runc/workflows/validate/badge.svg)](https://github.com/opencontainers/runc/actions?query=workflow%3Avalidate)
 [![gha/ci](https://github.com/opencontainers/runc/workflows/ci/badge.svg)](https://github.com/opencontainers/runc/actions?query=workflow%3Aci)
 [![CirrusCI](https://api.cirrus-ci.com/github/opencontainers/runc.svg)](https://cirrus-ci.com/github/opencontainers/runc)
+<a href="https://actuated.dev"><img alt="Arm CI sponsored by Actuated" src="https://docs.actuated.dev/images/actuated-badge.png" width="120px"></img></a>
 
 ## Introduction