Dockerfile

FROM openjdk:alpine as builder

RUN apk update \
  && apk add wget bash git

RUN MAVEN_VERSION=3.3.3 \
 && cd /usr/share \
 && wget --quiet http://archive.apache.org/dist/maven/maven-3/$MAVEN_VERSION/binaries/apache-maven-$MAVEN_VERSION-bin.tar.gz -O - | tar xzf - \
 && mv /usr/share/apache-maven-$MAVEN_VERSION /usr/share/maven \
 && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn

RUN set -ex \
  && mkdir /tmp/html \
  && git clone https://github.com/umlet/umlet /tmp/umlet \
  && cd /tmp/umlet \
  && sed -i.bak '/umlet-swing/d;/umlet-standalone/d;/umlet-eclipse-*/d' ./pom.xml \
  && mvn clean install \
  && UMLET_GWT_VERSION=$(grep 'SNAPSHOT</version>' ./umlet-gwt/pom.xml  | cut -f2 -d">"|cut -f1 -d"<") \
  && cp -R ./umlet-gwt/target/umlet-gwt-$UMLET_GWT_VERSION/baseletgwt /tmp/html/ \
  && wget -O /tmp/html/index.html http://www.umlet.com/umletino/umletino.html \
  && wget -O /tmp/html/favicon.ico http://www.umlet.com/umletino/favicon.ico \
  && wget -O /tmp/html/umletino.css http://www.umlet.com/umletino/umletino.css

RUN apk del wget git

FROM nginx:alpine as release

COPY ./default.conf /etc/nginx/conf.d/default.conf

COPY --from=builder ./tmp/html/ /usr/share/nginx/html/