# =========================================
# Stage 1: Build the Angular Application
# =========================================
ARG NODE_VERSION=24.7.0-alpine

# Use a lightweight Node.js image for building (customizable via ARG)
FROM node:${NODE_VERSION} AS builder

# Set the working directory inside the container
WORKDIR /app

# Copy package-related files first to leverage Docker's caching mechanism
COPY package.json package-lock.json ./

# Install project dependencies using npm ci (ensures a clean, reproducible install)
RUN --mount=type=cache,target=/root/.npm npm ci

# Copy the rest of the application source code into the container
COPY . .

# Build the Angular application
RUN npm run build

# =========================================
# Stage 2: Run SSR Server
# =========================================

FROM node:${NODE_VERSION} AS runner


WORKDIR /app

ENV NODE_ENV=production

# Copy only necessary build output
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/node_modules ./node_modules

# Angular SSR default port
EXPOSE 4000

# Start Nginx directly with custom config
CMD ["node", "dist/*/server/server.mjs"]