Dockerfile

FROM node:lts

# Avoid warnings by switching to noninteractive
ENV DEBIAN_FRONTEND=noninteractive

# Configure apt and install yarn
RUN apt-get update \
  && apt-get -y install --no-install-recommends apt-utils dialog 2>&1 \ 
  # Remove outdated yarn from /opt and install via package 
  # so it can be easily updated via apt-get upgrade yarn
  && rm -rf /opt/yarn-* \
  && rm -f /usr/local/bin/yarn \
  && rm -f /usr/local/bin/yarnpkg \
  && apt-get install -y curl apt-transport-https lsb-release \
  && curl -sS https://dl.yarnpkg.com/$(lsb_release -is | tr '[:upper:]' '[:lower:]')/pubkey.gpg | apt-key add - 2>/dev/null \
  && echo "deb https://dl.yarnpkg.com/$(lsb_release -is | tr '[:upper:]' '[:lower:]')/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
  && apt-get update \
  && apt-get -y install --no-install-recommends yarn \
  # Clean up
  && apt-get autoremove -y \
  && apt-get clean -y \
  && rm -rf /var/lib/apt/lists/*

# Set work directory
WORKDIR /usr/src/server

# Copying required files
COPY . .

# Installing dependencies
RUN yarn

# Command to run the server
CMD ["node", "src/index.js"]