Dockerfile Generator

# Build stage
FROM node:18-alpine AS builder

WORKDIR /app

# Copy package files
COPY package.json package-lock.json ./

# Install dependencies
RUN npm ci

# Copy source files
COPY . .

# Build the application
RUN npm run build

# Production stage
FROM node:18-alpine AS runner

WORKDIR /app

# Environment variables
ENV NODE_ENV=production

# Create non-root user
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 appuser

# Copy built files from builder
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json

# Set ownership and switch to non-root user
RUN chown -R appuser:nodejs /app
USER appuser

# Expose port
EXPOSE 3000

# Start the application
CMD ["npm", "start"]