Dockerfile

FROM tomcat:8-jre8
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        curl \
        fonts-noto-cjk \
        libgd3 \
        && \
    rm -rf /var/lib/apt/lists/*

# Build Graphviz from source because there are no binary distributions for recent versions
ARG GRAPHVIZ_VERSION
ARG GRAPHVIZ_BUILD_DIR=/tmp/graphiz-build
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        build-essential \
        jq \
        libexpat1-dev \
        libgd-dev \
        zlib1g-dev \
        && \
    mkdir -p $GRAPHVIZ_BUILD_DIR && \
    cd $GRAPHVIZ_BUILD_DIR && \
    GRAPHVIZ_VERSION=${GRAPHVIZ_VERSION:-$(curl -s https://gitlab.com/api/v4/projects/4207231/releases/ | jq -r '.[] | .name' | sort -V -r | head -1)} && \
    curl -o graphviz.tar.gz https://gitlab.com/api/v4/projects/4207231/packages/generic/graphviz-releases/${GRAPHVIZ_VERSION}/graphviz-${GRAPHVIZ_VERSION}.tar.gz && \
    tar -xzf graphviz.tar.gz && \
    cd graphviz-$GRAPHVIZ_VERSION && \
    ./configure && \
    make && \
    make install && \
    apt-get remove -y \
        build-essential \
        jq \
        libexpat1-dev \
        libgd-dev \
        zlib1g-dev \
        && \
    apt-get autoremove -y && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* && \
    rm -rf $GRAPHVIZ_BUILD_DIR

HEALTHCHECK --interval=30s --timeout=3s  --start-period=30s --retries=3 CMD curl --fail http://localhost:8080/plantuml || exit 1

CMD ["catalina.sh", "run"]