add ant Dockerfile, use jdk major version numbers instead

docker/ant/Dockerfile

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+FROM ubuntu:16.04 as downloader
+
+ARG jdk=9
+ADD provision/jdk/java-${jdk}.sh provision/jdk/java-${jdk}.sh
+RUN provision/jdk/java-${jdk}.sh
+
+ARG ant=1.10.1
+ADD provision/ant/ant-${ant}.sh provision/ant/ant-${ant}.sh
+RUN provision/ant/ant-${ant}.sh
+
+FROM ubuntu:16.04
+
+COPY --from=downloader /usr/local/apache-ant/ /usr/local/apache-ant/
+COPY --from=downloader /opt/jdk/ /opt/jdk/
+
+RUN update-alternatives  --install /usr/bin/java java /opt/jdk/bin/java 1000 && update-alternatives  --install /usr/bin/javac javac /opt/jdk/bin/javac 1000 && update-alternatives  --install /usr/bin/javadoc javadoc /opt/jdk/bin/javadoc 1000 && update-alternatives  --install /usr/bin/javap javap /opt/jdk/bin/javap 1000
+
+WORKDIR workspace
+
+ADD shared/ ./
+
+ARG jdk=9
+ADD ant/files/jdk-${jdk} ./
+
+ARG lombokjar=lombok.jar
+ADD https://projectlombok.org/downloads/${lombokjar} lombok.jar
+
+ENV JDK_VERSION=${jdk}
+ENV JAVA_HOME=/opt/jdk
+ENV ANT_HOME=/usr/local/apache-ant/apache-ant
+ENV PATH="${JAVA_HOME}/bin:${ANT_HOME}/bin:${PATH}"
+
+ENTRYPOINT bash

docker/ant/files/jdk-8/build.xml

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+<project name="example" default="dist" basedir=".">
+	<property name="src" location="src/main/java"/>
+	<property name="build" location="build"/>
+	<property name="dist" location="dist"/>
+	<property name="build.sysclasspath" value="ignore"/>
+	
+	<target name="init">
+		<tstamp/>
+		<mkdir dir="${build}"/>
+	</target>
+	
+	<target name="compile" depends="init" description="compile the source">
+		<javac classpath="lombok.jar" srcdir="${src}" destdir="${build}" fork="true"/>
+	</target>
+	
+	<target name="dist" depends="compile" description="generate the distribution">
+		<mkdir dir="${dist}/lib"/>
+		<jar jarfile="${dist}/lib/example-${DSTAMP}.jar" basedir="${build}"/>
+	</target>
+	
+	<target name="clean" description="clean up">
+		<delete dir="${build}"/>
+		<delete dir="${dist}"/>
+	</target>
+</project>

docker/ant/files/jdk-9/build.xml

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+<project name="example" default="dist" basedir=".">
+	<property name="src" location="src/main/java"/>
+	<property name="build" location="build"/>
+	<property name="dist" location="dist"/>
+	<property name="build.sysclasspath" value="ignore"/>
+	
+	<target name="init">
+		<tstamp/>
+		<mkdir dir="${build}"/>
+	</target>
+	
+	<target name="compile" depends="init" description="compile the source">
+		<javac classpath="lombok.jar" srcdir="${src}" destdir="${build}" fork="true">
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED"/>
+			<compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"/>
+		</javac>
+	</target>
+	
+	<target name="dist" depends="compile" description="generate the distribution">
+		<mkdir dir="${dist}/lib"/>
+		<jar jarfile="${dist}/lib/example-${DSTAMP}.jar" basedir="${build}"/>
+	</target>
+	
+	<target name="clean" description="clean up">
+		<delete dir="${build}"/>
+		<delete dir="${dist}"/>
+	</target>
+</project>

docker/ant/readme.md

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+## Configuration
+
+[_(general configuration and options)_](../readme.md)
+
+### `ARG ant=1.10.1`
+
+The ant version to be used. Supported values:
+
+- `1.10.1` (default)
+
+## Example build commands:
+
+(To be executed from the `<lombokhome>/docker` directory)
+
+```
+docker build -t lombok-ant-jdk9 -f gradle/Dockerfile .
+
+docker build -t lombok-ant-jdk9 --build-arg lombokjar=lombok-1.16.18.jar -f gradle/Dockerfile .
+```
+
+## Example run commands:
+
+```
+docker run -it lombok-ant-jdk9
+
+docker run --rm -it -v /<lombokhome>/dist/lombok.jar:/workspace/lombok.jar lombok-ant-jdk9
+```
+
+## Example container commands:
+
+```
+ant dist
+```