# SPDX-License-Identifier: MIT
#
# ermite-runner-ubuntu-24.04: the minimal CI-1 runner image. The same
# filesystem is used as an OCI image (container isolation) and exported to an
# ext4 base image (vm isolation) by scripts/build-image.sh. It holds the OS
# only: the runner executable is attached by the host at start (never baked
# in), so a runner upgrade does not need an image rebuild.
FROM ubuntu:24.04

ARG DEBIAN_FRONTEND=noninteractive

RUN apt-get update \
 && apt-get install -y --no-install-recommends \
      bash build-essential ca-certificates curl e2fsprogs git gnupg iproute2 \
      iptables jq kmod procps python-is-python3 python3 sudo tzdata unzip xz-utils zip \
 && rm -rf /var/lib/apt/lists/*

# Docker Engine from Docker's apt repository (the job gets its own daemon).
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 \
 && echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu noble stable" \
      > /etc/apt/sources.list.d/docker.list \
 && apt-get update \
 && apt-get install -y --no-install-recommends \
      docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin \
 && rm -rf /var/lib/apt/lists/*

# Like GitHub-hosted runners: user "runner" (uid 1001), passwordless sudo,
# member of "docker", with the job layout directories.
RUN useradd --create-home --uid 1001 --shell /bin/bash runner \
 && usermod -aG docker runner \
 && echo 'runner ALL=(ALL) NOPASSWD:ALL' > /etc/sudoers.d/runner \
 && chmod 0440 /etc/sudoers.d/runner \
 && mkdir -p /home/runner/work /opt/hostedtoolcache /opt/ermite \
 && chown -R runner:runner /home/runner /opt/hostedtoolcache

ENV RUNNER_TOOL_CACHE=/opt/hostedtoolcache \
    LANG=C.UTF-8

# The runner executable is bind-mounted (container) or provided by the init
# disk (vm) here; its init subcommand starts the job's own Docker daemon.
ENTRYPOINT ["/opt/ermite/ermite-runner", "init"]