Dockerfile

FROM node:20-alpine

# Accept build arguments for ports
ARG SERVER_PORT
ARG CLIENT_PORT

# Set them as environment variables for runtime
ENV SERVER_PORT=${SERVER_PORT}
ENV CLIENT_PORT=${CLIENT_PORT}

# Create work directory and set owner to node user
RUN mkdir -p /app/inscript && chown -R node:node /app

# Set working directory
WORKDIR /app/inscript

# Install system dependencies
RUN apk add --no-cache git openssh-client

# Switch to the node user (UID 1000)
USER node

# Configure Git to trust the /app directory (needed for Docker mounts)
RUN git config --global --add safe.directory /app

# Install dependencies
COPY --chown=node:node package*.json ./
RUN npm install

# Copy source code
COPY --chown=node:node . .

# Expose ports (documented)
EXPOSE ${SERVER_PORT}
EXPOSE ${CLIENT_PORT}

# Run the development server
CMD ["npm", "run", "dev"]