Install PlantUML on Ubuntu

install-plantuml.sh

# Install PlantUML
PLANTUML_URL="${PLANTUML_URL:-http://sourceforge.net/projects/plantuml/files/plantuml.jar/download}"

apt-get install -y default-jre

if [ -f "/opt/plantuml/plantuml.jar" ]; then
  echo '[plantuml] PlantUML already installed.'
else
  echo '[plantuml] Installing PlantUML...'
  apt-get install -y graphviz
  mkdir -p /opt/plantuml && \
    curl -o /opt/plantuml/plantuml.jar \
    -L ${PLANTUML_URL}
  printf '#!/bin/sh\nexec java -jar /opt/plantuml/plantuml.jar "$@"' > /usr/bin/plantuml
  chmod +x /usr/bin/plantuml
fi