feat: add DinD GitHub self-hosted runner configuration, which supports the amd64 and arm64 platforms

.env.example

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+REPOSITORY_OWNER=TourmalineCore
+REG_TOKEN=<TO_BE_MODIFIED!!!>
+RUNNER_GROUP=Default
+LABELS=self-hosted

.gitattributes

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+* text=auto eol=lf

.gitignore

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+.env

DockerImage/Dockerfile

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+FROM ubuntu:24.04
+
+ARG RUNNER_VERSION="2.334.0"
+ARG DOCKER_VERSION="28.5.2"
+
+# curl and sudo is needed to install packages
+# libicu-dev is needed to run a runner
+# ca-certificates is needed to install docker
+RUN apt-get update -y && \
+    apt-get upgrade -y && \
+    apt-get install -y \
+                curl \
+                sudo \
+                ca-certificates
+
+RUN install -m 0755 -d /etc/apt/keyrings && \
+    curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc && \
+    chmod a+r /etc/apt/keyrings/docker.asc && \
+    # Add the repository to Apt sources:
+    echo \
+    "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
+    $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
+      tee /etc/apt/sources.list.d/docker.list > /dev/null && \
+    apt-get update && \
+    apt install -y --no-install-recommends \
+                   containerd.io \
+                   docker-buildx-plugin \
+                   docker-ce=5:${DOCKER_VERSION}-1~ubuntu.24.04~noble \
+                   docker-ce-cli=5:${DOCKER_VERSION}-1~ubuntu.24.04~noble \
+                   docker-compose-plugin && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN curl -fsSL --retry 3 "https://github.com/moby/moby/raw/v${DOCKER_VERSION}/hack/dind" -o /usr/local/bin/dind \
+  && chmod a+x /usr/local/bin/dind
+
+# Runner cannot be run as the root user, so it`s needed to create a separate user
+RUN useradd -m runner && \
+    usermod -aG docker runner && \
+    usermod -aG sudo runner && \
+    echo "%sudo   ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers
+
+ARG TARGETARCH
+
+RUN ARCH=$([ "$TARGETARCH" = "amd64" ] && echo x64 || echo arm64) && \
+    cd /home/runner && \
+    mkdir actions-runner && \
+    cd actions-runner && \
+    curl -o actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz -L https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz && \
+    tar xzf ./actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz
+
+RUN /home/runner/actions-runner/bin/installdependencies.sh
+
+USER runner
+
+# Copy the start script and make it executable
+COPY start.sh /start.sh
+RUN sudo chmod +x /start.sh
+
+# Without this volume docker can't mount and use the overlay2 storage-driver, and will instead use the slower VFS
+# Also without this volume and overlay2, errors occur when creating a cluster using kind
+VOLUME /var/lib/docker
+
+ENTRYPOINT ["/start.sh"]

DockerImage/start.sh

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+#!/bin/bash
+
+cd /home/runner/actions-runner || exit
+
+# Cleanup docker dirs because docker fails to start if they haven`t been cleaned up after restart
+sudo rm -f /var/run/docker.pid
+sudo rm -rf /var/run/docker
+
+./config.sh --url https://github.com/${REPOSITORY_OWNER} --token ${REG_TOKEN} --runnergroup $RUNNER_GROUP --labels $LABELS
+
+sudo /usr/local/bin/dind dockerd --log-level=error &
+
+cleanup() {
+  echo "Removing runner..."
+  ./config.sh remove --token ${REG_TOKEN}
+}
+
+trap 'cleanup' TERM
+
+./run.sh & wait $!

docker-compose.yml

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+services:
+  runner:
+    build:
+      dockerfile: Dockerfile
+      context: ./DockerImage
+    restart: unless-stopped
+    env_file: .env
+    privileged: true
+    deploy:
+      mode: replicated
+      replicas: 2
+      resources:
+       limits:
+        cpus: '2'
+        memory: 2G
+       reservations:
+        cpus: '0.4'
+        memory: 256M