FROM node:18-alpine

# Build arguments - Coolify provides SOURCE_COMMIT automatically
ARG SOURCE_COMMIT=unknown
ARG APP_VERSION=1.0.0

WORKDIR /app

# Install curl for healthcheck and git for version control operations
RUN apk add --no-cache curl git

# Copy package files first for layer caching
COPY package*.json ./
RUN npm install --production

# Copy app code (changes more often — below the cached layer)
COPY . .

# Set environment variables for runtime
# Extract first 7 characters of SOURCE_COMMIT for short hash
ENV GIT_COMMIT=${SOURCE_COMMIT:0:7} \
    APP_VERSION=${APP_VERSION}

EXPOSE 3000

HEALTHCHECK --interval=10s --timeout=3s --start-period=5s --retries=2 \
  CMD curl -f http://localhost:3000/health || exit 1

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