# Balinyaar Telegram OTP relay — build context is `telegram-otp-bot/`.
#
# Zero dependencies (Node built-ins only), so there is no install step and no build stage: the image is
# the base runtime plus four source files.

FROM node:22-alpine
WORKDIR /app

COPY package.json ./
COPY src ./src

# The relay must accept connections from the API container, not just its own loopback. Everything else
# (bot token, chat ids, API key, proxy URL) is supplied by compose — src/env.js lets real environment
# variables win over any .env file, so nothing here depends on one existing.
ENV HOST=0.0.0.0
ENV PORT=5010

USER node
EXPOSE 5010
CMD ["node", "src/server.js"]