docker build -t webanno3 /~https://github.com/fkuhn/webanno3-docker.git
or
docker build --no-cache=true -t webanno3 /~https://github.com/fkuhn/webanno3-docker.git
The service starts with, for example:
docker run -i -t -p 18080:18080 webanno3
You can then access the webanno frontend via localhost:18080/webanno