init docker in docker

Signed-off-by: eternal-flame-AD <yume@yumechi.jp>

.gitignore

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+/workspace

config.yml

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+# Example configuration file, it's safe to copy this as the default config file without any modification.
+
+# You don't have to copy this file to your instance,
+# just run `./act_runner generate-config > config.yaml` to generate a config file.
+
+log:
+  # The level of logging, can be trace, debug, info, warn, error, fatal
+  level: info
+
+runner:
+  # Where to store the registration result.
+  file: .runner
+  # Execute how many tasks concurrently at the same time.
+  capacity: 1
+  # Extra environment variables to run jobs.
+  envs: DOCKER_HOST=tcp://dind:2376
+  # Extra environment variables to run jobs from a file.
+  # It will be ignored if it's empty or the file doesn't exist.
+  env_file: .env
+  # The timeout for a job to be finished.
+  # Please note that the Forgejo instance also has a timeout (3h by default) for the job.
+  # So the job could be stopped by the Forgejo instance if it's timeout is shorter than this.
+  timeout: 3h
+  # Whether skip verifying the TLS certificate of the Forgejo instance.
+  insecure: false
+  # The timeout for fetching the job from the Forgejo instance.
+  fetch_timeout: 5s
+  # The interval for fetching the job from the Forgejo instance.
+  fetch_interval: 2s
+  # The labels of a runner are used to determine which jobs the runner can run, and how to run them.
+  # Like: ["macos-arm64:host", "ubuntu-latest:docker://node:16-bullseye", "ubuntu-22.04:docker://node:16-bullseye"]
+  # If it's empty when registering, it will ask for inputting labels.
+  # If it's empty when execute `deamon`, will use labels in `.runner` file.
+  labels:
+    - "archlinux:docker://archlinux:base-devel"
+
+cache:
+  # Enable cache server to use actions/cache.
+  enabled: true
+  # The directory to store the cache data.
+  # If it's empty, the cache data will be stored in $HOME/.cache/actcache.
+  dir: ""
+  # The host of the cache server.
+  # It's not for the address to listen, but the address to connect from job containers.
+  # So 0.0.0.0 is a bad choice, leave it empty to detect automatically.
+  host: ""
+  # The port of the cache server.
+  # 0 means to use a random available port.
+  port: 0
+  # The external cache server URL. Valid only when enable is true.
+  # If it's specified, act_runner will use this URL as the ACTIONS_CACHE_URL rather than start a server by itself.
+  # The URL should generally end with "/".
+  external_server: ""
+
+container:
+  # Specifies the network to which the container will connect.
+  # Could be host, bridge or the name of a custom network.
+  # If it's empty, create a network automatically.
+  network: ""
+  # Whether to create networks with IPv6 enabled. Requires the Docker daemon to be set up accordingly.
+  # Only takes effect if "network" is set to "".
+  enable_ipv6: true
+  # Whether to use privileged mode or not when launching task containers (privileged mode is required for Docker-in-Docker).
+  privileged: false
+  # And other options to be used when the container is started (eg, --add-host=my.forgejo.url:host-gateway).
+  options: -u forgejo-job:forgejo-job --security-opt=no-new-privileges -m 8g
+  # The parent directory of a job's working directory.
+  # If it's empty, /workspace will be used.
+  workdir_parent:
+  # Volumes (including bind mounts) can be mounted to containers. Glob syntax is supported, see https://github.com/gobwas/glob
+  # You can specify multiple volumes. If the sequence is empty, no volumes can be mounted.
+  # For example, if you only allow containers to mount the `data` volume and all the json files in `/src`, you should change the config to:
+  # valid_volumes:
+  #   - data
+  #   - /src/*.json
+  # If you want to allow any volume, please use the following configuration:
+  # valid_volumes:
+  #   - '**'
+  valid_volumes: []
+  # overrides the docker client host with the specified one.
+  # If it's empty, act_runner will find an available docker host automatically.
+  # If it's "-", act_runner will find an available docker host automatically, but the docker host won't be mounted to the job containers and service containers.
+  # If it's not empty or "-", the specified docker host will be used. An error will be returned if it doesn't work.
+  docker_host: ""
+  # Pull docker image(s) even if already present
+  force_pull: false
+
+host:
+  # The parent directory of a job's working directory.
+  # If it's empty, $HOME/.cache/act/ will be used.
+  workdir_parent: /dev/null

docker-compose.yml

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+name: yume-forgejo-runner
+
+services:
+  dind:
+    image: docker:27.3-dind-rootless
+    environment:
+      - DOCKERD_ROOTLESS_ROOTLESSKIT_FLAGS="-p 0.0.0.0:2376:2376/tcp"
+    privileged: true
+    networks:
+      - dind-network
+
+  runner:
+    image: code.forgejo.org/forgejo/runner:4.0.1
+    links:
+      - dind
+    networks:
+      - dind-network
+      - external-network
+    volumes:
+      - ./config.yaml:/config.yaml
+      - ./workspace:/workspace
+      - /var/run/docker.sock:/var/run/docker.sock
+  
+networks:
+  dind-network:
+    internal: true
+  external-network:

images/scrachpad/archlinux/Dockerfile

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+FROM archlinux:base-devel
+
+RUN pacman -Syu --noconfirm fish git curl wget unzip tar gzip bzip2 xz && \
+    pacman -Scc --noconfirm && \
+    rm -rf /var/cache/pacman/pkg/*
+

images/scrachpad/node-20/Dockerfile

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+FROM node:20-bookworm
+

images/scrachpad/ubuntu/Dockerfile

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+FROM debian:bookworm
+
+RUN apt-get update && apt-get install -y fish build-essential git curl wget unzip tar gzip bzip2 xz-utils && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+