content: # Copyright 2019 The Kubernetes Authors.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # Recommended usage:
  #
  # - Run an ephemeral container
  # - Mount the current working directory into the container.
  # - Run the entrypoint as the user invoking docker run. Otherwise the output
  #   files will be owned by root, the default user.
  #
  # - Example:
  # docker run \
  # 	--rm \
  # 	--volume ${PWD}:/figures \
  # 	--user $(shell id --user):$(shell id --group) \
  # 	${IMAGE_TAG} \
  # 	-v /figures/*.plantuml
  
  FROM maven:3-openjdk-18-slim
  ARG PLANTUML_VERSION
  
  RUN apt-get update && apt-get install -y --no-install-recommends wget graphviz fonts-symbola fonts-wqy-zenhei && rm -rf /var/lib/apt/lists/*
  RUN wget -O /plantuml.jar http://sourceforge.net/projects/plantuml/files/plantuml.${PLANTUML_VERSION}.jar/download
  
  # By default, java writes a 'hsperfdata_<username>' directory in the work dir.
  # This directory is not needed; to ensure it is not written, we set `-XX:-UsePerfData`
  ENTRYPOINT [ "java", "-XX:-UsePerfData", "-jar", "/plantuml.jar" ]
  