feat: dind-rootless 22.04 runner (actions#2033)

* feat: dind-rootless 22.04 runner

* runner: Bring back packages needed by rootlesskit

* e2e: Update E2E buildvars with ubuntu 22.04 dockerfiles

* feat: use new uid for runner user

* e2e: Make it possible to inject ubuntu version via envvar for actiosn-runner-dind image

* doc: Use fsGroup=1001 for IRSA on Ubuntu 22.04 runner

Co-authored-by: toast-gear <toast-gear@users.noreply.github.com>
Co-authored-by: Yusuke Kuoka <ykuoka@gmail.com>

docs/detailed-docs.md

@@ -1634,6 +1634,8 @@ Create one using e.g. `eksctl`. You can refer to [the EKS documentation](https:/
 
 Once you set up the service account, all you need is to add `serviceAccountName` and `fsGroup` to any pods that use the IAM-role enabled service account.
 
+`fsGroup` needs to be set to the UID of the `runner` Linux user that runs the runner agent (and dockerd in case you use dind-runner). For anyone using an Ubuntu 20.04 runner image it's `1000` and for Ubuntu 22.04 one it's `1001`.
+
 For `RunnerDeployment`, you can set those two fields under the runner spec at `RunnerDeployment.Spec.Template`:
 
 ```yaml
@@ -1647,7 +1649,10 @@ spec:
       repository: USER/REO
       serviceAccountName: my-service-account
       securityContext:
+        # For Ubuntu 20.04 runner
         fsGroup: 1000
+        # Use 1001 for Ubuntu 22.04 runner
+        #fsGroup: 1001
 ```
 ### Software Installed in the Runner Image
 

runner/actions-runner-dind-rootless.ubuntu-20.04.dockerfile

@@ -134,7 +134,8 @@ USER runner
 
 # This will install docker under $HOME/bin according to the content of the script
 RUN export SKIP_IPTABLES=1 \
-    && curl -fsSL https://get.docker.com/rootless | sh
+    && curl -fsSL https://get.docker.com/rootless | sh \
+    && /home/runner/bin/docker -v
 
 RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
     && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \

runner/actions-runner-dind-rootless.ubuntu-22.04.dockerfile

@@ -0,0 +1,125 @@
+FROM ubuntu:22.04
+
+ARG TARGETPLATFORM
+ARG RUNNER_VERSION=2.299.1
+ARG RUNNER_CONTAINER_HOOKS_VERSION=0.1.3
+# Docker and Docker Compose arguments
+ENV CHANNEL=stable
+ARG DOCKER_COMPOSE_VERSION=v2.12.2
+ARG DUMB_INIT_VERSION=1.2.5
+ARG RUNNER_USER_UID=1001
+
+# Other arguments
+ARG DEBUG=false
+
+RUN test -n "$TARGETPLATFORM" || (echo "TARGETPLATFORM must be set" && false)
+
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update -y \
+    && apt-get install -y software-properties-common \
+    && add-apt-repository -y ppa:git-core/ppa \
+    && apt-get update -y \
+    && apt-get install -y --no-install-recommends \
+    curl \
+    ca-certificates \
+    git \
+    git-lfs \
+    iproute2 \
+    iptables \
+    jq \
+    supervisor \
+    sudo \
+    uidmap \
+    unzip \
+    zip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Runner user
+RUN adduser --disabled-password --gecos "" --uid $RUNNER_USER_UID runner
+
+ENV HOME=/home/runner
+
+# Set-up subuid and subgid so that "--userns-remap=default" works
+RUN set -eux; \
+    addgroup --system dockremap; \
+    adduser --system --ingroup dockremap dockremap; \
+    echo 'dockremap:165536:65536' >> /etc/subuid; \
+    echo 'dockremap:165536:65536' >> /etc/subgid
+
+RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
+    && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \
+    && if [ "$ARCH" = "amd64" ] || [ "$ARCH" = "i386" ]; then export ARCH=x86_64 ; fi \
+    && curl -fLo /usr/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v${DUMB_INIT_VERSION}/dumb-init_${DUMB_INIT_VERSION}_${ARCH} \
+    && chmod +x /usr/bin/dumb-init
+
+ENV RUNNER_ASSETS_DIR=/runnertmp
+RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
+    && if [ "$ARCH" = "amd64" ] || [ "$ARCH" = "x86_64" ] || [ "$ARCH" = "i386" ]; then export ARCH=x64 ; fi \
+    && mkdir -p "$RUNNER_ASSETS_DIR" \
+    && cd "$RUNNER_ASSETS_DIR" \
+    && curl -fLo runner.tar.gz https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz \
+    && tar xzf ./runner.tar.gz \
+    && rm runner.tar.gz \
+    && ./bin/installdependencies.sh \
+    && mv ./externals ./externalstmp \
+    # libyaml-dev is required for ruby/setup-ruby action.
+    # It is installed after installdependencies.sh and before removing /var/lib/apt/lists
+    # to avoid rerunning apt-update on its own.
+    && apt-get install -y libyaml-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV RUNNER_TOOL_CACHE=/opt/hostedtoolcache
+RUN mkdir /opt/hostedtoolcache \
+    && chgrp runner /opt/hostedtoolcache \
+    && chmod g+rwx /opt/hostedtoolcache
+
+RUN cd "$RUNNER_ASSETS_DIR" \
+    && curl -fLo runner-container-hooks.zip https://github.com/actions/runner-container-hooks/releases/download/v${RUNNER_CONTAINER_HOOKS_VERSION}/actions-runner-hooks-k8s-${RUNNER_CONTAINER_HOOKS_VERSION}.zip \
+    && unzip ./runner-container-hooks.zip -d ./k8s \
+    && rm -f runner-container-hooks.zip
+
+# Make the rootless runner directory executable
+RUN mkdir /run/user/1000 \
+    && chown runner:runner /run/user/1000 \
+    && chmod a+x /run/user/1000
+
+# We place the scripts in `/usr/bin` so that users who extend this image can
+# override them with scripts of the same name placed in `/usr/local/bin`.
+COPY entrypoint-dind-rootless.sh startup.sh logger.sh graceful-stop.sh update-status /usr/bin/
+RUN chmod +x /usr/bin/entrypoint-dind-rootless.sh /usr/bin/startup.sh
+
+# Copy the docker shim which propagates the docker MTU to underlying networks
+# to replace the docker binary in the PATH.
+COPY docker-shim.sh /usr/local/bin/docker
+
+# Configure hooks folder structure.
+COPY hooks /etc/arc/hooks/
+
+# Add the Python "User Script Directory" to the PATH
+ENV PATH="${PATH}:${HOME}/.local/bin:/home/runner/bin"
+ENV ImageOS=ubuntu22
+ENV DOCKER_HOST=unix:///run/user/1000/docker.sock
+ENV XDG_RUNTIME_DIR=/run/user/1000
+
+RUN echo "PATH=${PATH}" > /etc/environment \
+    && echo "ImageOS=${ImageOS}" >> /etc/environment \
+    && echo "DOCKER_HOST=${DOCKER_HOST}" >> /etc/environment \
+    && echo "XDG_RUNTIME_DIR=${XDG_RUNTIME_DIR}" >> /etc/environment
+
+# No group definition, as that makes it harder to run docker.
+USER runner
+
+# This will install docker under $HOME/bin according to the content of the script
+RUN export SKIP_IPTABLES=1 \
+    && curl -fsSL https://get.docker.com/rootless | sh \
+    && /home/runner/bin/docker -v
+
+RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
+    && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \
+    && if [ "$ARCH" = "amd64" ] || [ "$ARCH" = "i386" ]; then export ARCH=x86_64 ; fi \
+    && mkdir -p /home/runner/bin \
+    && curl -fLo /home/runner/bin/docker-compose https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-Linux-${ARCH} \
+    && chmod +x /home/runner/bin/docker-compose
+
+ENTRYPOINT ["/bin/bash", "-c"]
+CMD ["entrypoint-dind-rootless.sh"]

test/e2e/e2e_test.go

@@ -92,7 +92,10 @@ func TestE2E(t *testing.T) {
 	skipTestIDCleanUp := os.Getenv("ARC_E2E_SKIP_TEST_ID_CLEANUP") != ""
 	skipArgoTunnelCleanUp := os.Getenv("ARC_E2E_SKIP_ARGO_TUNNEL_CLEAN_UP") != ""
 
-	vars := buildVars(os.Getenv("ARC_E2E_IMAGE_REPO"))
+	vars := buildVars(
+		os.Getenv("ARC_E2E_IMAGE_REPO"),
+		os.Getenv("UBUNTU_VERSION"),
+	)
 
 	var testedVersions = []struct {
 		label                     string
@@ -401,7 +404,7 @@ type vars struct {
 	commonScriptEnv []string
 }
 
-func buildVars(repo string) vars {
+func buildVars(repo, ubuntuVer string) vars {
 	if repo == "" {
 		repo = "actionsrunnercontrollere2e"
 	}
@@ -443,7 +446,7 @@ func buildVars(repo string) vars {
 			EnableBuildX: true,
 		},
 		{
-			Dockerfile: "../../runner/actions-runner.dockerfile",
+			Dockerfile: fmt.Sprintf("../../runner/actions-runner.ubuntu-%s.dockerfile", ubuntuVer),
 			Args: []testing.BuildArg{
 				{
 					Name:  "RUNNER_VERSION",
@@ -454,7 +457,7 @@ func buildVars(repo string) vars {
 			EnableBuildX: true,
 		},
 		{
-			Dockerfile: "../../runner/actions-runner-dind.dockerfile",
+			Dockerfile: fmt.Sprintf("../../runner/actions-runner-dind.ubuntu-%s.dockerfile", ubuntuVer),
 			Args: []testing.BuildArg{
 				{
 					Name:  "RUNNER_VERSION",
@@ -465,7 +468,7 @@ func buildVars(repo string) vars {
 			EnableBuildX: true,
 		},
 		{
-			Dockerfile: "../../runner/actions-runner-dind-rootless.dockerfile",
+			Dockerfile: fmt.Sprintf("../../runner/actions-runner-dind-rootless.ubuntu-%s.dockerfile", ubuntuVer),
 			Args: []testing.BuildArg{
 				{
 					Name:  "RUNNER_VERSION",