Spin up GH actions runners in Docker

gh-actions-runner.dockerfile

FROM catthehacker/ubuntu:full-latest

ARG runner_version=2.299.1

WORKDIR /opt
RUN mkdir actions-runner \
 && cd actions-runner \
 && curl -o actions-runner-linux-x64-${runner_version}.tar.gz \
	-L https://github.com/actions/runner/releases/download/v${runner_version}/actions-runner-linux-x64-${runner_version}.tar.gz \
 && tar xzf ./actions-runner-linux-x64-${runner_version}.tar.gz

ENV RUNNER_ALLOW_RUNASROOT=1
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false

WORKDIR /opt/actions-runner

start-a-gh-runner.sh

#!/bin/bash

url=$1
name=$2
token=$3

set -eux

# make sure image is built
docker build -t runner -f gh-actions-runner.dockerfile .

# remove old 'tainer
docker rm -f $name || true

# create container
docker run -d --name $name \
	--privileged \
	-v /var/run/docker.sock:/var/run/docker.sock \
	--entrypoint /bin/bash \
	--restart always \
	runner -c 'sleep 10 && ./run.sh'

sleep 1

docker exec $name bash -c "./config.sh --unattended --url $url --token $token --replace --name $name"

docker logs -f $name