Dockerfile

FROM ubuntu:22.04

# Install required packages
RUN apt-get update -y && \
    apt-get upgrade -y && \
    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
    curl \
    unzip \
    git \
    ca-certificates \
    jq \
    sudo \
    apt-transport-https \
    lsb-release \
    gnupg \
    software-properties-common && \
    rm -rf /var/lib/apt/lists/*

# Install Azure CLI
RUN curl -sL https://aka.ms/InstallAzureCLIDeb | bash

# Install kubectl (hardcoded version for reliability)
RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" && \
    install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl && \
    rm kubectl

# Install GitHub CLI (gh)
RUN curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg && \
    chmod go+r /usr/share/keyrings/githubcli-archive-keyring.gpg && \
    echo "deb [arch=amd64 signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | tee /etc/apt/sources.list.d/github-cli.list && \
    apt-get update && \
    apt-get install -y gh && \
    rm -rf /var/lib/apt/lists/*

# Copy entrypoint
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

# Create runner user
RUN useradd -m runner
WORKDIR /home/runner

RUN chown -R runner:runner /home/runner

USER runner

RUN mkdir /tmp/runner
WORKDIR /tmp/runner

# Download and extract GitHub Actions runner
ENV RUNNER_VERSION=2.328.0
RUN curl -LO https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-x64-${RUNNER_VERSION}.tar.gz && \
    tar --touch --no-overwrite-dir -xzf actions-runner-linux-x64-${RUNNER_VERSION}.tar.gz && \
    rm actions-runner-linux-x64-${RUNNER_VERSION}.tar.gz

CMD ["/entrypoint.sh"]