pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>example</groupId>
    <artifactId>dropwizard-jib-example</artifactId>
    <version>1</version>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>

        <!-- for exec-maven-plugin -->
        <mainClass>example.JibExampleApplication</mainClass>

        <dropwizard.version>1.3.16</dropwizard.version>
        <dropwizard.server.config>dropwizard.yml</dropwizard.server.config>
        <dropwizard-template-config.version>1.5.0</dropwizard-template-config.version>

        <jib.container.appRoot>/app</jib.container.appRoot>
        <jib-maven-plugin.version>3.4.4</jib-maven-plugin.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.dropwizard</groupId>
                <artifactId>dropwizard-bom</artifactId>
                <version>${dropwizard.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>io.dropwizard</groupId>
            <artifactId>dropwizard-core</artifactId>
        </dependency>

        <dependency>
            <groupId>de.thomaskrille</groupId>
            <artifactId>dropwizard-template-config</artifactId>
            <version>${dropwizard-template-config.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>com.google.cloud.tools</groupId>
                <artifactId>jib-maven-plugin</artifactId>
                <version>${jib-maven-plugin.version}</version>
                <configuration>
                    <container>
                        <args>
                            <arg>server</arg>
                            <arg>${jib.container.appRoot}/resources/${dropwizard.server.config}</arg>
                        </args>
                        <ports>
                            <port>8080</port>
                        </ports>

                        <!-- good defaults intended for Java 8 (>= 8u191) containers -->
                        <jvmFlags>
                            <jvmFlag>-server</jvmFlag>
                            <jvmFlag>-Djava.awt.headless=true</jvmFlag>
                            <jvmFlag>-XX:InitialRAMFraction=2</jvmFlag>
                            <jvmFlag>-XX:MinRAMFraction=2</jvmFlag>
                            <jvmFlag>-XX:MaxRAMFraction=2</jvmFlag>
                            <jvmFlag>-XX:+UseG1GC</jvmFlag>
                            <jvmFlag>-XX:MaxGCPauseMillis=100</jvmFlag>
                            <jvmFlag>-XX:+UseStringDeduplication</jvmFlag>
                        </jvmFlags>
                    </container>
                </configuration>
                <executions>
                    <execution>
                        <id>dockerBuild</id>
                        <goals>
                            <goal>dockerBuild</goal>
                        </goals>
                        <phase>package</phase>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.6.0</version>
                <configuration>
                    <mainClass>${mainClass}</mainClass>
                    <arguments>
                        <argument>server</argument>
                        <argument>${project.build.sourceDirectory}/../resources/${dropwizard.server.config}</argument>
                    </arguments>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>