Dockerfile

FROM node:20
WORKDIR /code

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

RUN --mount=type=secret,id=FIREBASE_ADMIN_KEY,mode=0444,required=true \
    cp /run/secrets/FIREBASE_ADMIN_KEY /admin_key.json

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