Dockerfile

# Stage 1: Install dependencies
FROM node:20-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci --omit=dev

# Stage 2: Build the application
FROM node:20-alpine AS build
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci
COPY . .
RUN npm run build

# Stage 3: Production runner
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV PORT=3000

RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

COPY --from=build /app/public ./public
COPY --from=build /app/.next/standalone ./
COPY --from=build /app/.next/static ./.next/static

RUN mkdir -p .data && chown nextjs:nodejs .data

USER nextjs

EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/ || exit 1

LABEL maintainer="Carlos Molina Galindo"
LABEL description="Pulse Radio - Internet radio player PWA"

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