FROM node:22-alpine AS build

WORKDIR /app

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

COPY . .

# VITE_API_URL is baked into the JS bundle at build time.
# Default to /api so the nginx proxy is used when not overridden.
ARG VITE_API_URL=/api
ENV VITE_API_URL=$VITE_API_URL

RUN npm run build

FROM nginx:alpine

COPY --from=build /app/dist /usr/share/nginx/html
COPY nginx.conf /etc/nginx/nginx.conf.template

EXPOSE 80

# API_URL is the backend's public base URL used by nginx proxy_pass.
# Set this at runtime in Coolify, e.g. API_URL=https://api.crowmate.fr
ENV API_URL=http://localhost:3000

# Substitute ${API_URL} in the nginx template at container start, then launch nginx.
# The quoted variable list prevents envsubst from replacing nginx variables like $host.
CMD ["/bin/sh", "-c", "envsubst '${API_URL}' < /etc/nginx/nginx.conf.template > /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;'"]