Dockerfile

FROM node:lts-alpine

# globally install yarn on our docker image
RUN npm i -g yarn typescript

# use changes to package.json to force Docker not to use the cache
# when we change our application's nodejs dependencies:
ADD package.json /tmp/package.json
RUN cd /tmp && yarn
RUN mkdir -p /opt/app && cp -a /tmp/node_modules /opt/app/

# make all commands from here on use /opt/app as their working dir
WORKDIR /opt/app

# add all files in the service to /opt/app
ADD packages/api /opt/app/packages/api
ADD packages/logger /opt/app/packages/logger

# build the typescript app from /opt/app/packages/api
WORKDIR /opt/app/packages/api
RUN yarn build

# run the app
CMD [ "yarn", "start" ]