Run ARM64 e2e tests on Equinix hardware

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

.github/runners/runner-setup.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+# Copyright 2021 The Flux authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script installs a GitHub self-hosted ARM64 runner for running Flux end-to-end tests.
+
+set -eu
+
+RUNNER_NAME=$1
+REPOSITORY_TOKEN=$2
+REPOSITORY_URL=${3:-https://github.com/fluxcd/flux2}
+
+GITHUB_RUNNER_VERSION=2.285.1
+
+# download runner
+curl -o actions-runner-linux-arm64.tar.gz -L https://github.com/actions/runner/releases/download/v${GITHUB_RUNNER_VERSION}/actions-runner-linux-arm64-${GITHUB_RUNNER_VERSION}.tar.gz \
+  && tar xzf actions-runner-linux-arm64.tar.gz \
+  && rm actions-runner-linux-arm64.tar.gz
+
+# register runner with GitHub
+./config.sh --unattended --url ${REPOSITORY_URL} --token ${REPOSITORY_TOKEN} --name ${RUNNER_NAME}
+
+# start runner
+sudo ./svc.sh install
+sudo ./svc.sh start