adding initial Dockerfile for convenience to run CORE within Docker, including GUI

Dockerfile

@@ -0,0 +1,101 @@
+# syntax=docker/dockerfile:1
+FROM ubuntu:20.04
+LABEL Description="CORE Docker Image"
+
+# define variables
+ARG DEBIAN_FRONTEND=noninteractive
+ARG PREFIX=/usr/local
+ARG BRANCH=develop
+ARG CORE_TARBALL=core.tar.gz
+ARG OSPF_TARBALL=ospf.tar.gz
+
+# install system dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    automake \
+    bash \
+    ca-certificates \
+    ethtool \
+    gawk \
+    gcc \
+    g++ \
+    iproute2 \
+    iputils-ping \
+    libc-dev \
+    libev-dev \
+    libreadline-dev \
+    libtool \
+    libtk-img \
+    make \
+    nftables \
+    python3 \
+    python3-pip \
+    python3-tk \
+    pkg-config \
+    systemctl \
+    tk \
+    wget \
+    xauth \
+    xterm \
+    && apt-get clean
+# install python dependencies
+RUN python3 -m pip install \
+    grpcio==1.27.2 \
+    grpcio-tools==1.27.2 \
+    poetry==1.1.7
+# retrieve, build, and install core
+RUN wget -q -O ${CORE_TARBALL} https://api.github.com/repos/coreemu/core/tarball/${BRANCH} && \
+    tar xf ${CORE_TARBALL} && \
+    cd coreemu-core* && \
+    ./bootstrap.sh && \
+    ./configure && \
+    make -j $(nproc) && \
+    make install && \
+    cd daemon && \
+    python3 -m poetry build -f wheel && \
+    python3 -m pip install dist/* && \
+    cp scripts/* ${PREFIX}/bin && \
+    mkdir /etc/core && \
+    cp -n data/core.conf /etc/core && \
+    cp -n data/logging.conf /etc/core && \
+    mkdir -p ${PREFIX}/share/core && \
+    cp -r examples ${PREFIX}/share/core && \
+    echo '\
+[Unit]\n\
+Description=Common Open Research Emulator Service\n\
+After=network.target\n\
+\n\
+[Service]\n\
+Type=simple\n\
+ExecStart=/usr/local/bin/core-daemon\n\
+TasksMax=infinity\n\
+\n\
+[Install]\n\
+WantedBy=multi-user.target\
+' > /lib/systemd/system/core-daemon.service && \
+    cd ../.. && \
+    rm ${CORE_TARBALL} && \
+    rm -rf coreemu-core*
+# retrieve, build, and install ospf mdr
+RUN wget -q -O ${OSPF_TARBALL} https://github.com/USNavalResearchLaboratory/ospf-mdr/tarball/master && \
+    tar xf ${OSPF_TARBALL} && \
+    cd USNavalResearchLaboratory-ospf-mdr* && \
+    ./bootstrap.sh && \
+    ./configure --disable-doc --enable-user=root --enable-group=root \
+        --with-cflags=-ggdb --sysconfdir=/usr/local/etc/quagga --enable-vtysh \
+        --localstatedir=/var/run/quagga && \
+    make -j $(nproc) && \
+    make install && \
+    cd .. && \
+    rm ${OSPF_TARBALL} && \
+    rm -rf USNavalResearchLaboratory-ospf-mdr*
+# retrieve and install emane packages
+RUN wget -q https://adjacentlink.com/downloads/emane/emane-1.2.7-release-1.ubuntu-20_04.amd64.tar.gz && \
+    tar xf emane*.tar.gz && \
+    cd emane-1.2.7-release-1/debs/ubuntu-20_04/amd64 && \
+    apt-get install -y ./emane*.deb ./python3-emane_*.deb && \
+    cd ../../../.. && \
+    rm emane-1.2.7-release-1.ubuntu-20_04.amd64.tar.gz && \
+    rm -rf emane-1.2.7-release-1
+CMD ["systemctl", "start", "core-daemon"]
+# sudo docker run -itd --name core -e DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix:rw --privileged core