How to configure Rails & Docker app to use Angular? - ruby-on-rails

Question

I have a very basic rails & docker app that I want to add Angular to, to handle all my frontend javascript. However, I can't seem to get Angular to work. I installed Angular via webpacker. As of now I only have the hello-angular files that come standard with rails 6 and webpack.
Dockerfile
FROM ruby:2.6
# Prerequisites
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && apt-get update -q && apt-get install -y nodejs yarn cron
# Cache Gems
WORKDIR /tmp
ADD Gemfile .
ADD Gemfile.lock .
RUN bundle install
# Copy App
WORKDIR /usr/bcb/app
ADD . /usr/bcb/app
# Precompile assets
RUN bin/yarn install
RUN bin/rails assets:precompile
# Expose port 3000 to other containers (Note: not external devices such as our workstation)
ENV PORT 3000
EXPOSE $PORT
# Run the built in Rails server (puma)
CMD ./docker-entrypoint.sh
# clean up APT
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
docker-compose.yml
version: '3.3'
volumes:
dbdata:
driver: local
services:
nginx:
image: nginx
ports:
- '8080:80'
volumes:
- ./nginx/vhost.development.conf:/etc/nginx/conf.d/default.conf
restart: always
depends_on:
- web
db:
image: postgres:11
environment:
- PGDATA=/var/lib/postgresql/data/pgdata
- POSTGRES_USER=appuser
- POSTGRES_PASSWORD=devdb
volumes:
- dbdata:/var/lib/postgresql/data/pgdata
web:
build: . # Builds the image from Dockerfile
environment:
WEBPACK_DEV_SERVER_HOST: webpack_dev_server
links:
- webpack_dev_server
environment:
- RAILS_ENV=development
- RACK_ENV=development
- POSTGRES_USER=appuser
- POSTGRES_PASSWORD=devdb
volumes:
- .:/usr/bcb/app
depends_on:
- db
webpack_dev_server:
image: bcbapp_web
command: ./bin/webpack-dev-server
environment:
NODE_ENV: development
RAILS_ENV: development
WEBPACK_DEV_SERVER_HOST: 0.0.0.0
volumes:
- .:/usr/bcb/app
ports:
- "3035:3035"
docker-entrypoint.sh
rm -f tmp/pids/server*.pid
bin/rails server -b 0.0.0.0 -p $PORT --pid tmp/pids/server.`hostname`.pid
bundle exec rake db:migrate RAILS_ENV=$environment 2>/dev/null || bundle exec rake db:create db:migrate
Here is my github repo:
[1]: https://github.com/zacwillis/bcb
What am I missing?