FROM node:20-alpine

WORKDIR /usr/src/app

COPY package*.json ./

# Set timezone to Asia/Shanghai
RUN apk add --no-cache tzdata
ENV TZ=Asia/Shanghai
ENV NODE_ENV=production

RUN npm install

COPY . .

# Expose API port and SMTP port
EXPOSE 5182
EXPOSE 25

# Environment variables for database connection will be passed at runtime
# ENV DB_HOST=...
# ENV DB_USER=...
# ENV DB_PASSWORD=...
# ENV DB_NAME=...

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