the nodejs Dockerfiles before attempts to reduce size

nodejsDockerfileBefore

FROM node:8.12

# version of app
LABEL version="1.1"
RUN apt-get update
RUN apt-get install -y git

WORKDIR /home/node/app

COPY . /home/node/app
RUN mkdir /root/.ssh/

COPY id_rsa /root/.ssh/id_rsa
RUN chmod 600 /root/.ssh/id_rsa

RUN npm install

RUN apt-get remove -y git

# Remove SSH keys
RUN rm -rf /root/.ssh/
USER "node"

# use node has user
EXPOSE 3030