OpenWrt staging builds on GitLab with autoscaling VPSes on Hetzner Cloud

docker-compose.yml

version: '2'
services:
  hetzner-runner:
    image: mawalu/hetzner-gitlab-runner:latest
    volumes:
      - "./hetzner_config:/etc/gitlab-runner"

gitlab-runner-config.toml

concurrent = 50
check_interval = 0

[session_server]
  session_timeout = 1800

[[runners]]
  name = "hetzner autoscale"
  url = "https://gitlab.com"
  token = "private"
  executor = "docker+machine"
  limit = 5
  [runners.custom_build_dir]
  [runners.cache]
	Type = "s3"
	Shared = true
    [runners.cache.s3]
    	ServerAddress = "foo.true.cz"
    	AccessKey = "private"
    	SecretKey = "secret"
    	BucketName = "openwrt-hetzner-gitlab-runners-cache"
    [runners.cache.gcs]
    [runners.cache.azure]
  [runners.docker]
    tls_verify = false
    image = "debian:10"
    privileged = true
    disable_entrypoint_overwrite = false
    oom_kill_disable = false
    disable_cache = false
    volumes = ["/cache", "/var/run/docker.sock:/var/run/docker.sock"]
    shm_size = 0
  [runners.machine]
    IdleCount = 0
    IdleTime = 0
    MachineDriver = "hetzner"
    MachineName = "runner-%s"
    MachineOptions = ["hetzner-api-token=private", "hetzner-image=debian-9", "hetzner-server-type=cpx41"]

pipeline https://gitlab.com/ynezz/openwrt/-/pipelines/244909588
result https://foo.true.cz/minio/openwrt/staging-builds/