假设spring-boot-maven-plugin具有以下配置

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <image>
            <name>docker.example.com/library/${project.artifactId}</name>
            <publish>true</publish>
        </image>
        <docker>
            <publishRegistry>
                <username>user</username>
                <password>secret</password>
                <url>https://docker.example.com/v1/</url>
                <email>user@example.com</email>
            </publishRegistry>
        </docker>
    </configuration>
</plugin>

并且不希望将我们的凭据存储在pom.xml中，因为它可供有权访问版本控制系统的每个人使用。Maven方法是使用我们的凭据在~/.m2/setting.xml中定义profile，并使用相应的占位符替换pom.xml中的凭据，例如：
~/. m2/设置.xml：

...
<profiles>
...    
    <profile>
        <id>registry-example.com</id>
        <properties>
            <registry.username>user</registry.username>
            <registry.password>secret</registry.password>
            <registry.url>https://docker.example.com/v1/</registry.url>
            <registry.email>user@example.com</registry.email>
        </properties>
    </profile>
...    
</profiles>
...

pom.xml:

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <image>
            <name>docker.example.com/library/${project.artifactId}</name>
            <publish>true</publish>
        </image>
        <docker>
            <publishRegistry>
                <username>${registry.username}</username>
                <password>${registry.password}</password>
                <url>${registry.url}</url>
                <email>${registry.email}</email>
            </publishRegistry>
        </docker>
    </configuration>
</plugin>

现在，为了告诉maven考虑我们创建的profile，我们需要运行maven，其中-P标志指定profile的id：

mvn spring-boot:build-image -Pregistry-example.com