FROM node:20-slim

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install --production

# Copy application code
COPY . .

# Environment variables with defaults
ENV PORT=3000 \
    DB_HOST=postgres-svc \
    DB_PORT=5432 \
    DB_NAME=logapp \
    DB_USER=postgres \
    DB_PASSWORD=postgrespass \
    DB_SSL=false \
    AUTH_USERNAME=admin \
    AUTH_PASSWORD=password123

EXPOSE 3000

CMD ["node", "server.js"]