egentrening/Dockerfile

# Build stage - includes dev dependencies for building the app
FROM node:22-alpine AS build

# Set working directory for build operations
WORKDIR /app

# Copy package files to install dependencies
COPY package*.json ./
# Install all dependencies including dev dependencies needed for build
RUN npm ci

# Copy source code and build the application
COPY . .
RUN npm run build

# Production stage - clean runtime environment
FROM node:22-alpine AS production

# Set working directory for runtime
WORKDIR /app

# Copy package files for production install
COPY package*.json ./
# Install only production dependencies (excludes dev dependencies)
RUN npm ci --only=production

# Copy built application from build stage
COPY --from=build /app/build ./build

# Expose the port the application will run on
EXPOSE 3000

# Set environment to production
ENV NODE_ENV=production

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