I am getting a error running "docker build ." after "git clone https://github.com/apache/guacamole-client";. Specifically it says:
"ERROR [builder 10/11] RUN /opt/guacamole/bin/build-guacamole.sh "/tmp/guacamole-docker-BUILD" /opt/guacamole". That fails at: "Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/mojo/build-helper-maven-plugin/3.2.0/build-helper-maven-plugin-3.2.0.pom " "Plugin org.codehaus.mojo:build-helper-maven-plugin:3.2.0 or one of its dependencies could not be resolved:" "The following artifacts could not be resolved: org.codehaus.mojo:build-helper-maven-plugin:pom:3.2.0 (absent): Could not transfer artifact org.codehaus.mojo:build-helper-maven-plugin:pom:3.2.0 from/to central (https://repo.maven.apache.org/maven2: Network is unreachable." I have working DNS/internet connection and can reach the Guacamole github and ping the internet. Sent with [Proton Mail](https://proton.me/mail/home) secure email.
