Create the layers configuration, modify the pom and Dockerfile

docker/docker-spring-boot/pom.xml

@@ -45,6 +45,7 @@
                 <configuration>
                     <layers>
                         <enabled>true</enabled>
+                        <configuration>${project.basedir}/src/layers.xml</configuration>
                     </layers>
                 </configuration>
             </plugin>

docker/docker-spring-boot/src/layers.xml

@@ -0,0 +1,27 @@
+<layers xmlns="http://www.springframework.org/schema/boot/layers"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://www.springframework.org/schema/boot/layers
+                     https://www.springframework.org/schema/boot/layers/layers-2.3.xsd">
+    <application>
+        <into layer="spring-boot-loader">
+            <include>org/springframework/boot/loader/**</include>
+        </into>
+        <into layer="application" />
+    </application>
+    <dependencies>
+        <into layer="snapshot-dependencies">
+            <include>*:*:*SNAPSHOT</include>
+        </into>
+        <into layer="internal-dependencies">
+            <include>com.baeldung.docker:*:*</include>
+        </into>
+        <into layer="dependencies" />
+    </dependencies>
+    <layerOrder>
+        <layer>dependencies</layer>
+        <layer>spring-boot-loader</layer>
+        <layer>internal-dependencies</layer>
+        <layer>snapshot-dependencies</layer>
+        <layer>application</layer>
+    </layerOrder>
+</layers>

docker/docker-spring-boot/src/main/docker/Dockerfile

@@ -10,6 +10,7 @@ RUN java -Djarmode=layertools -jar application.jar extract
 FROM adoptopenjdk:11-jre-hotspot
 COPY --from=builder dependencies/ ./
 COPY --from=builder snapshot-dependencies/ ./
+COPY --from=builder internal-dependencies/ ./
 COPY --from=builder spring-boot-loader/ ./
 COPY --from=builder application/ ./
 ENTRYPOINT ["java", "org.springframework.boot.loader.JarLauncher"]