Dockerfile

# Setup the environment
FROM node:10-alpine
ENV NODE_ENV=production
ENV APP=/home/node/app
RUN mkdir -p $APP/node_modules && chown -R node:node /home/node/*
WORKDIR $APP

# Copy over tiles before anything else that may actually change, to ensure
# users don't have to re-download them when new versions are deployed.
COPY --chown=node:node ./public/imgs/tiles ./public/imgs/tiles/

# Copy over package related files to install production modules
COPY --chown=node:node ./package*.json ./
COPY --chown=node:node ./bin/copy-assets-to-public.sh ./bin/

# Install production dependencies
RUN npm i --only=production --quiet

# Copy local code to the image. In order to ensure users don't have to re-download
# an unchanged folder (like tiles) anytime something changes in public, copy
# over individual folders separately to leverage Docker's caching. The COPY
# commands are ordered by least to most likely to change.
COPY --chown=node:node ./public/index.html ./public/
COPY --chown=node:node ./public/markers.default.json ./public/
COPY --chown=node:node ./public/imgs/icons ./public/imgs/icons/
COPY --chown=node:node ./public/imgs/markers ./public/imgs/markers/
COPY --chown=node:node ./server.js ./
COPY --chown=node:node ./public/css ./public/css/
COPY --chown=node:node ./public/js ./public/js/

# List off contents of final image
RUN ls -la $APP

# Expose the default port from the server, on the container
EXPOSE 3000

# Start the app
CMD ["node", "server.js"]