Support system properties for Docker registries in Maven plugin

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/docs/antora/modules/maven-plugin/examples/packaging-oci-image/docker-registry-global-settings.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- tag::docker-registry-global-settings[] -->
+<profile>
+	<id>spring-boot-docker-creds</id>
+	<activation>
+		<activeByDefault>true</activeByDefault>
+	</activation>
+	<properties>
+		<spring-boot.build-image.builder>my-custom/image-builder:1.0.0</spring-boot.build-image.builder>
+		<spring-boot.build-image.docker.builderRegistry.username>demo-user</spring-boot.build-image.docker.builderRegistry.username>
+		<spring-boot.build-image.docker.builderRegistry.email>demo-user@example.com</spring-boot.build-image.docker.builderRegistry.email>
+		<spring-boot.build-image.docker.builderRegistry.password>demo-user-password</spring-boot.build-image.docker.builderRegistry.password>
+	</properties>
+</profile>
+<!-- end::docker-registry-global-settings[] -->

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/docs/antora/modules/maven-plugin/pages/build-image.adoc

@@ -97,19 +97,24 @@ The following table summarizes the available parameters for `docker.builderRegis
 |===
 | Parameter | Description
 
-| `username`
+| `username` +
+(`spring-boot.build-image.docker.[builderRegistry \| publishRegistry].username`)
 | Username for the Docker image registry user. Required for user authentication.
 
-| `password`
+| `password` +
+(`spring-boot.build-image.docker.[builderRegistry \| publishRegistry].password`)
 | Password for the Docker image registry user. Required for user authentication.
 
-| `url`
+| `url` +
+(`spring-boot.build-image.docker.[builderRegistry \| publishRegistry].url`)
 | Address of the Docker image registry. Optional for user authentication.
 
-| `email`
+| `email` +
+(`spring-boot.build-image.docker.[builderRegistry \| publishRegistry].email`)
 | E-mail address for the Docker image registry user. Optional for user authentication.
 
-| `token`
+| `token` +
+(`spring-boot.build-image.docker.[builderRegistry \| publishRegistry].token`)
 | Identity token for the Docker image registry user. Required for token authentication.
 |===
 
@@ -440,21 +445,13 @@ When using the `publish` option on the command line with authentication, you can
 [source,shell]
 ----
 $ mvn spring-boot:build-image \
-      -Ddocker.publishRegistry.username=user \
-      -Ddocker.publishRegistry.password=secret \
-      -Ddocker.publishRegistry.url=docker.example.com \
+      -Dspring-boot.build-image.docker.publishRegistry.username=user \
+      -Dspring-boot.build-image.docker.publishRegistry.password=secret \
+      -Dspring-boot.build-image.docker.publishRegistry.url=docker.example.com \
       -Dspring-boot.build-image.publish=true \
       -Dspring-boot.build-image.imageName=docker.example.com/library/my-app:v1
 ----
 
-and reference the properties in the XML configuration:
-
-[source,xml,indent=0,subs="verbatim,attributes"]
-----
-include::example$packaging-oci-image/docker-pom-authentication-command-line.xml[tags=docker]
-----
-
-
 
 [[build-image.examples.caches]]
 === Builder Cache and Workspace Configuration
@@ -555,3 +552,21 @@ If the builder or run image is stored in a private Docker registry that supports
 ----
 include::example$packaging-oci-image/docker-token-authentication-pom.xml[tags=docker-token-authentication]
 ----
+
+In addition to configuring credentials directly in the POM you can  set these same credentials as system properties.
+
+[source,shell]
+----
+$ mvn spring-boot:build-image \
+      -Dspring-boot.build-image.docker.builderRegistry.username=user \
+      -Dspring-boot.build-image.docker.builderRegistry.password=secret \
+      -Dspring-boot.build-image.docker.builderRegistry.url=docker.example.com \
+----
+
+Another option to externalizing credentials is to set the credentials in your global Maven `settings.xml` file.
+
+[source,xml,indent=0,subs="verbatim,attributes"]
+----
+include::example$packaging-oci-image/docker-registry-global-settings.xml[tags=docker-registry-global-settings]
+----
+

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/main/java/org/springframework/boot/maven/BuildImageMojo.java

@@ -49,6 +49,7 @@
 import org.springframework.boot.loader.tools.LayoutFactory;
 import org.springframework.boot.loader.tools.Libraries;
 import org.springframework.boot.loader.tools.LoaderImplementation;
+import org.springframework.boot.maven.Docker.DockerRegistry;
 import org.springframework.util.StringUtils;
 
 /**
@@ -187,6 +188,86 @@ public abstract class BuildImageMojo extends AbstractPackagerMojo {
 	@Parameter(property = "spring-boot.build-image.imagePlatform")
 	String imagePlatform;
 
+	/**
+	 * Alias for the builder registry {@link DockerRegistry#username} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.builderRegistry.username")
+	String builderRegistryUsername;
+
+	/**
+	 * Alias for the builder registry {@link DockerRegistry#password} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.builderRegistry.password")
+	String builderRegistryPassword;
+
+	/**
+	 * Alias for the builder registry {@link DockerRegistry#username} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.builderRegistry.email")
+	String builderRegistryEmail;
+
+	/**
+	 * Alias for the builder registry {@link DockerRegistry#token} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.builderRegistry.token")
+	String builderRegistryToken;
+
+	/**
+	 * Alias for the builder registry {@link DockerRegistry#url} to support configuration
+	 * through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.builderRegistry.url")
+	String builderRegistryUrl;
+
+	/**
+	 * Alias for the publish registry {@link DockerRegistry#username} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.publishRegistry.username")
+	String publishRegistryUsername;
+
+	/**
+	 * Alias for the publish registry {@link DockerRegistry#password} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.publishRegistry.password")
+	String publishRegistryPassword;
+
+	/**
+	 * Alias for the publish registry {@link DockerRegistry#username} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.publishRegistry.email")
+	String publishRegistryEmail;
+
+	/**
+	 * Alias for the publish registry {@link DockerRegistry#token} to support
+	 * configuration through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.publishRegistry.token")
+	String publishRegistryToken;
+
+	/**
+	 * Alias for the publish registry {@link DockerRegistry#url} to support configuration
+	 * through command-line property.
+	 * @since 3.5.0
+	 */
+	@Parameter(property = "spring-boot.build-image.docker.publishRegistry.url")
+	String publishRegistryUrl;
+
 	/**
 	 * Docker configuration options.
 	 * @since 2.4.0
@@ -262,9 +343,15 @@ private void buildImage() throws MojoExecutionException {
 		Libraries libraries = getLibraries(Collections.emptySet());
 		try {
 			BuildRequest request = getBuildRequest(libraries);
-			DockerConfiguration dockerConfiguration = (this.docker != null)
-					? this.docker.asDockerConfiguration(request.isPublish())
-					: new Docker().asDockerConfiguration(request.isPublish());
+			if (this.docker == null) {
+				this.docker = new Docker();
+			}
+			DockerRegistry builderRegistry = configureBuilderRegistry(this.docker.getBuilderRegistry());
+			DockerRegistry publisherRegistry = configurePublishRegistry(this.docker.getPublishRegistry());
+			this.docker.setBuilderRegistry(builderRegistry);
+			this.docker.setPublishRegistry(publisherRegistry);
+
+			DockerConfiguration dockerConfiguration = this.docker.asDockerConfiguration(request.isPublish());
 			Builder builder = new Builder(new MojoBuildLog(this::getLog), dockerConfiguration);
 			builder.build(request);
 		}
@@ -273,6 +360,40 @@ private void buildImage() throws MojoExecutionException {
 		}
 	}
 
+	private DockerRegistry configurePublishRegistry(DockerRegistry dockerRegistry) {
+		if (dockerRegistry == null) {
+			dockerRegistry = new DockerRegistry();
+		}
+		checkAndSetDockerRegistry(this.publishRegistryEmail, dockerRegistry.getEmail(), dockerRegistry::setEmail);
+		checkAndSetDockerRegistry(this.publishRegistryPassword, dockerRegistry.getPassword(),
+				dockerRegistry::setPassword);
+		checkAndSetDockerRegistry(this.publishRegistryToken, dockerRegistry.getToken(), dockerRegistry::setToken);
+		checkAndSetDockerRegistry(this.publishRegistryUrl, dockerRegistry.getUrl(), dockerRegistry::setUrl);
+		checkAndSetDockerRegistry(this.publishRegistryUsername, dockerRegistry.getUsername(),
+				dockerRegistry::setUsername);
+		return dockerRegistry;
+	}
+
+	private DockerRegistry configureBuilderRegistry(DockerRegistry dockerRegistry) {
+		if (dockerRegistry == null) {
+			dockerRegistry = new DockerRegistry();
+		}
+		checkAndSetDockerRegistry(this.builderRegistryEmail, dockerRegistry.getEmail(), dockerRegistry::setEmail);
+		checkAndSetDockerRegistry(this.builderRegistryPassword, dockerRegistry.getPassword(),
+				dockerRegistry::setPassword);
+		checkAndSetDockerRegistry(this.builderRegistryToken, dockerRegistry.getToken(), dockerRegistry::setToken);
+		checkAndSetDockerRegistry(this.builderRegistryUrl, dockerRegistry.getUrl(), dockerRegistry::setUrl);
+		checkAndSetDockerRegistry(this.builderRegistryUsername, dockerRegistry.getUsername(),
+				dockerRegistry::setUsername);
+		return dockerRegistry;
+	}
+
+	private void checkAndSetDockerRegistry(String value, String currentValue, Consumer<String> setter) {
+		if (StringUtils.hasText(value) && !StringUtils.hasText(currentValue)) {
+			setter.accept(value);
+		}
+	}
+
 	private BuildRequest getBuildRequest(Libraries libraries) {
 		ImagePackager imagePackager = new ImagePackager(getArchiveFile(), getBackupFile());
 		Function<Owner, TarArchive> content = (owner) -> getApplicationContent(owner, libraries, imagePackager);