[BUG?]: Create mountpoint for /externals/ (#203)

* runner/controller: Add externals directory mount point

* Runner: Create hack for moving content of /runner/externals/ dir

* Externals dir Mount: mount examples for '__e/node12/bin/node' not found error

controllers/runner_controller.go

@@ -382,12 +382,22 @@ func (r *RunnerReconciler) newPod(runner v1alpha1.Runner) (corev1.Pod, error) {
 					EmptyDir: &corev1.EmptyDirVolumeSource{},
 				},
 			},
+			{
+				Name: "externals",
+				VolumeSource: corev1.VolumeSource{
+					EmptyDir: &corev1.EmptyDirVolumeSource{},
+				},
+			},
 		}
 		pod.Spec.Containers[0].VolumeMounts = []corev1.VolumeMount{
 			{
 				Name:      "work",
 				MountPath: "/runner/_work",
 			},
+			{
+				Name:      "externals",
+				MountPath: "/runner/externals",
+			},
 		}
 		pod.Spec.Containers[0].Env = append(pod.Spec.Containers[0].Env, corev1.EnvVar{
 			Name:  "DOCKER_HOST",
@@ -401,6 +411,10 @@ func (r *RunnerReconciler) newPod(runner v1alpha1.Runner) (corev1.Pod, error) {
 					Name:      "work",
 					MountPath: "/runner/_work",
 				},
+				{
+					Name:      "externals",
+					MountPath: "/runner/externals",
+				},
 			},
 			Env: []corev1.EnvVar{
 				{

runner/Dockerfile

@@ -1,7 +1,7 @@
 FROM ubuntu:18.04
 
 ARG TARGETPLATFORM
-ARG RUNNER_VERSION=2.274.1
+ARG RUNNER_VERSION=2.274.2
 ARG DOCKER_VERSION=19.03.12
 
 ENV DEBIAN_FRONTEND=noninteractive
@@ -55,7 +55,7 @@ RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
   && usermod -aG docker runner \
   && echo "%sudo   ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers
 
-# Runner download supports amd64 as x64
+# Runner download supports amd64 as x64. Externalstmp is needed for making mount points work inside DinD.
 RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
   && if [ "$ARCH" = "amd64" ]; then export ARCH=x64 ; fi \
   && mkdir -p /runner \
@@ -64,6 +64,7 @@ RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
   && tar xzf ./runner.tar.gz \
   && rm runner.tar.gz \
   && ./bin/installdependencies.sh \
+  && mv ./externals ./externalstmp \
   && rm -rf /var/lib/apt/lists/*
 
 COPY entrypoint.sh /runner

runner/Makefile

@@ -2,7 +2,7 @@ NAME ?= summerwind/actions-runner
 DIND_RUNNER_NAME ?= ${NAME}-dind
 TAG ?= latest
 
-RUNNER_VERSION ?= 2.273.5
+RUNNER_VERSION ?= 2.274.2
 DOCKER_VERSION ?= 19.03.12
 
 # default list of platforms for which multiarch image is built

runner/entrypoint.sh

@@ -43,6 +43,9 @@ fi
 cd /runner
 ./config.sh --unattended --replace --name "${RUNNER_NAME}" --url "${GITHUB_URL}${ATTACH}" --token "${RUNNER_TOKEN}" ${RUNNER_GROUP_ARG} ${LABEL_ARG}
 
+# Hack due to the DinD volumes
+mv ./externalstmp/* ./externals/
+
 for f in runsvc.sh RunnerService.js; do
   diff {bin,patched}/${f} || :
   sudo mv bin/${f}{,.bak}