Add avahi-daemon to systemcore-cross-ubuntu (#71)

Author: mcm001

systemcore-cross-ubuntu/Dockerfile.2027

@@ -5,7 +5,7 @@ FROM wpilib/ubuntu-${TYPE}:${UBUNTU}
 # Install toolchain
 RUN curl -SL https://github.com/wpilibsuite/opensdk/releases/download/v2025-2/arm64-bookworm-2025-x86_64-linux-gnu-Toolchain-12.2.0.tgz | sh -c 'mkdir -p /usr/local && cd /usr/local && tar xzf - --strip-components=2'
 
-RUN apt update && apt install -y openjdk-21-jdk && rm -rf /var/lib/apt/lists/*
+RUN apt update && apt install -y openjdk-21-jdk avahi-daemon && rm -rf /var/lib/apt/lists/*
 
 ENV JAVA_HOME=/usr/lib/jvm/java-21-openjdk-amd64