- Improved readability of `fullSetup.sh`
- Added logic to create self-cert SSL when running locally. This is needed to support testing with http/2

- Created `docker-compose` file for self-cert testing

- Improved `fullSetup.sh`
- Fixed `local.conf`
- `docker-compose-local.yml` now starts up correctly. `curl -I --http2 -k https://localhost` shows that http/2 is working as expected

- Updated syntax for Docker network

- Improved logic for setting `/etc/sysctl.conf` settings

- Docker is no longer reinstalled when running `fullSetup.sh` multiple times

- Local Nginx config updated to proxy_pass to the correct container. Now the local development UI uses http/2 when the URL is `https://localhost` (note that we don't include the port)!

- Docker testing container is now removed after we verify that the Docker engine is working correctly

- local Nginx config updated to use variables for DNS resolution, which should help ensure that Nginx works even when started before the app's containers