Dockerfile

# Build stage
FROM node:22-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci

# Copy source files
COPY . .

# Build the application
RUN npm run build

# Production stage
FROM node:22-alpine AS runner

WORKDIR /app

# Create non-root user for security
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 sveltekit

# Copy built application
COPY --from=builder /app/build ./build
COPY --from=builder /app/package*.json ./

# Install production dependencies only
RUN npm ci --omit=dev

# Change ownership
RUN chown -R sveltekit:nodejs /app

# Switch to non-root user
USER sveltekit

# Expose port
EXPOSE 3000

# Set environment variables
ENV NODE_ENV=production
ENV PORT=3000

# Start the application
CMD ["node", "build"]