add some dockerfiles for testing against jdk9

docker/.dockerignore

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+readme.txt

docker/gradle/Dockerfile

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+FROM ubuntu:16.04 as downloader
+
+RUN apt-get update && apt-get install wget -y
+RUN wget --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/9.0.1+11/jdk-9.0.1_linux-x64_bin.tar.gz -O jdk9_linux-x64_bin.tar.gz
+RUN tar -xzf jdk9_linux-x64_bin.tar.gz -C /opt/
+
+RUN wget https://services.gradle.org/distributions/gradle-4.2.1-bin.zip -O gradle.zip
+RUN apt-get update && apt-get install unzip -y
+RUN mkdir /opt/gradle && unzip -d /opt/gradle gradle.zip
+
+FROM ubuntu:16.04
+
+COPY --from=downloader /opt/gradle/ /opt/gradle/
+COPY --from=downloader /opt/jdk-9.0.1/ /opt/jdk-9.0.1/
+
+RUN update-alternatives  --install /usr/bin/java java /opt/jdk-9.0.1/bin/java 1000 && update-alternatives  --install /usr/bin/javac javac /opt/jdk-9.0.1/bin/javac 1000 && update-alternatives  --install /usr/bin/javadoc javadoc /opt/jdk-9.0.1/bin/javadoc 1000 && update-alternatives  --install /usr/bin/javap javap /opt/jdk-9.0.1/bin/javap 1000
+
+WORKDIR workspace
+
+ADD shared/ ./
+ADD gradle/files/ ./
+ARG lombokjar=lombok.jar
+ADD https://projectlombok.org/downloads/${lombokjar} lombok.jar
+
+ENV JAVA_HOME=/opt/jdk-9.0.1
+ENV GRADLE_HOME=/opt/gradle/gradle-4.2.1
+ENV PATH="${JAVA_HOME}/bin:${GRADLE_HOME}/bin:${PATH}"
+
+ENTRYPOINT bash

docker/gradle/files/build.gradle

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+apply plugin: 'java'
+
+dependencies {
+	compileOnly files('lombok.jar')
+}

docker/maven/Dockerfile

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+FROM ubuntu:16.04 as downloader
+
+RUN apt-get update && apt-get install wget -y
+RUN wget --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/9.0.1+11/jdk-9.0.1_linux-x64_bin.tar.gz -O jdk9_linux-x64_bin.tar.gz
+RUN tar -xzf jdk9_linux-x64_bin.tar.gz -C /opt/
+
+RUN wget http://www-us.apache.org/dist/maven/maven-3/3.5.0/binaries/apache-maven-3.5.0-bin.tar.gz -O maven.tar.gz
+RUN mkdir /usr/local/apache-maven/ && tar xvf maven.tar.gz -C /usr/local/apache-maven/
+
+FROM ubuntu:16.04
+
+COPY --from=downloader /usr/local/apache-maven/ /usr/local/apache-maven/
+COPY --from=downloader /opt/jdk-9.0.1/ /opt/jdk-9.0.1/
+
+RUN update-alternatives  --install /usr/bin/java java /opt/jdk-9.0.1/bin/java 1000 && update-alternatives  --install /usr/bin/javac javac /opt/jdk-9.0.1/bin/javac 1000 && update-alternatives  --install /usr/bin/javadoc javadoc /opt/jdk-9.0.1/bin/javadoc 1000 && update-alternatives  --install /usr/bin/javap javap /opt/jdk-9.0.1/bin/javap 1000
+
+WORKDIR workspace
+
+ADD shared/ ./
+ADD maven/files/ ./
+ARG lombokjar=lombok.jar
+ADD https://projectlombok.org/downloads/${lombokjar} lombok.jar
+
+ENV JAVA_HOME=/opt/jdk-9.0.1
+ENV M2_HOME=/usr/local/apache-maven/apache-maven-3.5.0
+ENV M2=${M2_HOME}/bin 
+ENV PATH="${M2}:${JAVA_HOME}/bin:${PATH}"
+
+ENTRYPOINT bash

docker/maven/files/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.example</groupId>
+    <artifactId>lombok-jdk9</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <java.version>1.9</java.version>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.7.0</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                    <showDeprecation>true</showDeprecation>
+                    <showWarnings>true</showWarnings> 
+                    <fork>true</fork>
+                    <compilerargs>
+                        <arg>-Werror</arg>
+                        <arg>-Xlint:all</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED</arg>
+                        <arg>-J--add-opens=-Jjdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED</arg>
+                    </compilerargs>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.2.3</version>
+            <scope>system</scope>
+            <systemPath>/workspace/lombok.jar</systemPath>
+        </dependency>
+    </dependencies>
+
+</project>

docker/readme.txt

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+ARG lombokjar=lombok.jar
+
+Example build commands:
+
+docker build -t lombok-gradle-jdk9 -f gradle/Dockerfile .
+
+docker build -t lombok-gradle-jdk9 --build-arg lombokjar=lombok-1.16.18.jar -f gradle/Dockerfile .
+

docker/shared/lombok.config

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+lombok.addJavaxGeneratedAnnotation = false
+lombok.anyConstructor.suppressConstructorProperties = true
+
+config.stopBubbling = true

docker/shared/src/main/java/HelloWorld.java

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+@lombok.Data
+public class HelloWorld {
+    private final int answer;
+    
+    public static void main(String... args) {
+        System.out.println(new HelloWorld(42).getAnswer());
+    }
+    
+    @FunctionalInterface
+    interface Foo {
+        String name();
+    }
+}