# syntax=docker/dockerfile:1
# PROD image: build static SPA, serve with nginx. Self-contained.
# Build context = mcma-webui/. The future prod compose puts a real proxy in
# front; this image just serves the built assets with SPA fallback.

# -- build stage ----------------------------------------------------------
FROM node:22-slim AS build

WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci

COPY . .

# Build-time default for the API base URL (rsbuild inlines PUBLIC_* vars). This
# is only the *fallback* now — the real value is injected at container start by
# 30-runtime-config.sh, so the image can target any backend without a rebuild.
ARG PUBLIC_API_BASE_URL=/api/v1
ENV PUBLIC_API_BASE_URL=$PUBLIC_API_BASE_URL
RUN npm run build

# -- runtime stage --------------------------------------------------------
FROM nginx:1.27-alpine AS runtime

COPY dockerfiles/nginx.conf /etc/nginx/conf.d/default.conf
COPY --from=build /app/dist /usr/share/nginx/html

# Runtime config injection: the nginx image runs /docker-entrypoint.d/*.sh
# before starting, regenerating /config.js from $PUBLIC_API_BASE_URL.
COPY dockerfiles/30-runtime-config.sh /docker-entrypoint.d/30-runtime-config.sh
RUN chmod +x /docker-entrypoint.d/30-runtime-config.sh

EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]