Dockerfile for running Claude Code

Dockerfile

FROM node:18-slim

ARG CLAUDE_VERSION=latest

RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        ca-certificates \
        curl \
        gosu && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Create non-root user with specific UID/GID for better compatibility
RUN groupadd -g 1001 codeuser && \
    useradd -u 1001 -g 1001 -m -s /bin/bash codeuser

# Set working directory and fix permissions
WORKDIR /app
RUN chown -R codeuser:codeuser /app

USER codeuser

# Install Claude CLI as non-root user
RUN npm config set prefix '/home/codeuser/.npm-global' && \
    npm install -g @anthropic-ai/claude-code@${CLAUDE_VERSION}

# Add npm global bin to PATH
ENV PATH="/home/codeuser/.npm-global/bin:$PATH"

# Health check to ensure claude CLI is available
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD claude --version || exit 1

# Switch back to root for entrypoint (needed for user switching via gosu)
USER root

CMD ["bash"]