Dockerfile

# This dockerfile sets up an image to run node.js, which will
# act as a server on port 4400 to prepare to execute code
# The actual execution of the code is done in a docker-in-docker within this
# For that, see the Dockerfile in the javarunner directory
FROM --platform=linux/amd64 alpine

RUN apk add --update nodejs npm
RUN apk add docker
RUN apk add sudo

RUN addgroup nodeuser
RUN adduser  -D -H -S nodeuser -G nodeuser \
        && echo "nodeuser ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/nodeuser \
        && chmod 0440 /etc/sudoers.d/nodeuser

WORKDIR /usr/src/app
COPY package*.json ./

RUN npm install


# Bundle app source
COPY . .

EXPOSE 4400

RUN chown -R nodeuser:nodeuser /usr/src/app
RUN chown -R nodeuser:nodeuser /home
USER nodeuser

CMD [ "npm", "start" ]