ralph/Dockerfile at main · decocms/ralph · GitHub

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# Ralph - Autonomous Claude Code Runner for GitHub Issues
#
# Build: docker build -t ralph:latest .
# Run:   docker run --rm \
#          -e GITHUB_TOKEN=xxx \
#          -e ANTHROPIC_API_KEY=xxx \
#          -v ~/.ssh/id_rsa:/home/ralph/.ssh/id_rsa:ro \
#          ralph:latest git@github.com:owner/repo.git 42 fix/issue-42

FROM node:20-slim

LABEL maintainer="Ralph Bot" \
      description="Autonomous Claude Code runner for GitHub issues" \
      version="1.0.0"

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    git \
    openssh-client \
    curl \
    jq \
    bc \
    ca-certificates \
    gpg \
    && rm -rf /var/lib/apt/lists/*

# Install GitHub CLI (gh) for forking repos and creating PRs
RUN curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | gpg --dearmor -o /usr/share/keyrings/githubcli-archive-keyring.gpg \
    && echo "deb [arch=$(dpkg --print-architecture) 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 > /dev/null \
    && apt-get update \
    && apt-get install -y gh \
    && rm -rf /var/lib/apt/lists/*

# Install Claude Code CLI globally
RUN npm install -g @anthropic-ai/claude-code

# Note: This implementation uses the "Ralph Wiggum" iterative loop technique
# See: https://awesomeclaude.ai/ralph-wiggum
# The loop is implemented in entrypoint.sh rather than using the Claude plugin

# Use existing 'node' user (UID 1000) instead of creating new user
# (required: Claude Code won't run --dangerously-skip-permissions as root)
RUN mkdir -p /home/node/.ssh && \
    chown -R node:node /home/node

# Create working directory and set ownership
WORKDIR /ralph
RUN chown -R node:node /ralph

# Copy the entrypoint script
COPY entrypoint.sh /usr/local/bin/entrypoint
RUN chmod +x /usr/local/bin/entrypoint

# Set default environment variables
ENV MAX_ITERATIONS=10 \
    ITERATION_DELAY=5 \
    WORKDIR=/tmp/ralph-workspace \
    HOME=/home/node

# Health check - verify claude is installed
RUN claude --version || echo "Claude CLI installed"

# Switch to non-root user
USER node

# Entry point
ENTRYPOINT ["/usr/local/bin/entrypoint"]

# Default help message if no args provided
CMD ["--help"]