Can't I get it to work with

npm install --production

in docker? I want to lighten the docker image. It would be nice if you could give me an example.

You can use multi staged builds to make it work. For e.g. something like this:

FROM node:14.9.0-alpine3.12 as dev

WORKDIR /app

RUN apk add --no-cache --virtual .build-deps alpine-sdk python3

COPY package.json yarn.lock ./

COPY prisma ./prisma

RUN yarn install --frozen-lockfile

FROM node:14.9.0-alpine3.12

WORKDIR /app

COPY --from=dev /app/package.json /app/yarn.lock /app/prisma ./

RUN yarn install --frozen-lockfile --production && \
  rm -rf node_modules/@prisma/engines

COPY . .

EXPOSE 3001

CMD [ "yarn",  "start" ]

I have used

yarn

but the same can be done with

npm

.

Thanks, I'll give it a try!