# Stage 1: Install dependencies (including build tools)
FROM node:22-bookworm-slim AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci

# Stage 2: Build application
FROM node:22-bookworm-slim AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# Stage 3: Prepare static web server
FROM alpine:3.19 AS server-prep
RUN wget -O /tmp/sws.tar.gz \
    https://github.com/static-web-server/static-web-server/releases/download/v2.17.0/static-web-server-v2.17.0-x86_64-unknown-linux-musl.tar.gz
RUN tar -xzf /tmp/sws.tar.gz -C /tmp \
    --strip-components=1

# Stage 4: Create runtime image
FROM gcr.io/distroless/static-debian12:nonroot

COPY --from=builder --chown=nonroot:nonroot /app/dist /app

COPY --from=server-prep --chown=nonroot:nonroot /tmp/static-web-server /usr/local/bin/

USER nonroot
WORKDIR /app
EXPOSE 8080

ENTRYPOINT ["/usr/local/bin/static-web-server"]
CMD ["--port", "8080", "--root", "/app", "--log-level", "warn"]