FROM ubuntu:20.04 ARG DEBIAN_FRONTEND=noninteractive RUN mkdir -p /usr/src/frontend # specifying the working dir inside the container WORKDIR /usr/src/frontend # copy current dir's content to container's WORKDIR root i.e. all the contents of the robosats app COPY . . RUN apt-get update RUN apt-get -y install npm # packages we use RUN npm install # launch CMD ["npm", "run", "build"]