FROM node:18.0-alpine
RUN apk add --no-cache rsync
WORKDIR /usr/local/src
COPY package* ./
RUN npm install
RUN npm install nodemon -g
COPY ./script.sh script.sh
EXPOSE 3000
CMD [ "./script.sh" ]

In this docker file, we are not copying anything except package.json files and entrypoint script (script.sh). So the docker image which is getting creating won't have code in it, we will mount the volume while creating the container, and that would have the disk.