j40-cejst-2/client/Dockerfile

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FROM node:14
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# Set working directory like 'cd' command, any subsequent instructions in this docker file, will start from
# this working directory
WORKDIR /client
# Copy the package.json and package_lock.json files from local to the docker image / container
COPY package*.json ./
# install all packages as a layer in the docker image / container
RUN npm install
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# copy all local files from the working directory to the docker image/container however we must use
# dockerignore to ignore node_modules so that the image can use what what was just installed from the above
# step.
COPY . .
ENV PORT=6000
EXPOSE 6000
CMD [ "npm", "start"]