Docker workflow:
```
cd services/base-image
docker build -t commapp/services-base . -f Dockerfile
cd ../..
docker build . -f services/tunnelbroker/Dockerfile
```
Before this is merged, base-image will need to be updated to reference
new docker hub image
Nix worfklow
```
nix develop
cd services/tunnelbroker
mkdir build && cd build && cmake .. && make
```