Added instructions to README for creating and testing a docker image …

README.md

@@ -59,7 +59,8 @@ through the use of environment variables to point at a postgres database running
 
 ```shell
 $ SPRING_DATASOURCE_URL=jdbc:postgresql://127.0.0.1:59314/spt-recruitment-demo \
-  SPRING_DATASOURCE_USERNAME=postgres SPRING_DATASOURCE_PASSWORD=p@ssw0rd \
+  SPRING_DATASOURCE_USERNAME=postgres \
+  SPRING_DATASOURCE_PASSWORD=p@ssw0rd \
   SPRING_ACTIVEMQ_BROKER_URL=tcp://localhost:59313 \
   java -jar target/spt-development-demo-0.0.1-SNAPSHOT.jar 
 ```
@@ -86,4 +87,20 @@ $ curl -v -u bob:password123! http://localhost:8080/api/v1.0/books/4
 ```
 ```shell
 $ curl -v -u bob:password123! -X DELETE http://localhost:8080/api/v1.0/books/4
-```
+```
+Running the demo in docker
+==========================
+
+There are multiple ways to [build a docker image](https://www.baeldung.com/spring-boot-docker-images) for Spring Boot 
+applications. The simplest way is to use Buildpacks.
+
+```shell
+$ ./mvnw spring-boot:build-image
+```
+The [docker-compose.service.yml](./docker-compose.service.yml) can then be used to run the image along with 
+[docker-compose.yml](./docker-compose.yml) to start up Postgres and ActiveMQ.
+
+```shell
+$ docker compose -f docker-compose.yml -f docker-compose.service.yml up -d
+```
+The cURL commands above can again be used to test the API.

docker-compose.service.yml

@@ -0,0 +1,12 @@
+version: '3.7'
+
+services:
+  api:
+    image: docker.io/library/spt-development-demo:0.0.1-SNAPSHOT
+    environment:
+      SPRING_DATASOURCE_URL: jdbc:postgresql://spt-development-demo-db-1:5432/spt-recruitment-demo
+      SPRING_DATASOURCE_USERNAME: postgres
+      SPRING_DATASOURCE_PASSWORD: p@ssw0rd
+      SPRING_ACTIVEMQ_BROKER_URL: tcp://spt-development-demo-activemq-1:61616
+    ports:
+      - "8080:8080"

docker-compose.yml

@@ -10,7 +10,7 @@ services:
     ports:
       - "5432"
 
-  artemis:
+  activemq:
     image: apache/activemq-classic:6.1.0
     ports:
       - "61616"

pom.xml

@@ -460,6 +460,17 @@
 				<artifactId>maven-failsafe-plugin</artifactId>
 				<configuration>
 					<!--
+						Prevents the following warning introduced in JDK 21, caused by Mockito or more specifically byte-buddy-agent:
+
+						WARNING: A Java agent has been loaded dynamically (/Users/khm/.m2/repository/net/bytebuddy/byte-buddy-agent/1.14.5/byte-buddy-agent-1.14.5.jar)
+						WARNING: If a serviceability tool is in use, please run with -XX:+EnableDynamicAgentLoading to hide this warning
+						WARNING: If a serviceability tool is not in use, please run with -Djdk.instrument.traceUsage for more information
+						WARNING: Dynamic loading of agents will be disallowed by default in a future release
+
+						NOTE. argLine property is set by JaCoCo in prepare-agent stage.
+					 -->
+					<argLine>-XX:+EnableDynamicAgentLoading ${argLine}</argLine>
+					<!--
                          classesDirectory is required to work around a bug that is discussed at
                          https://github.com/spring-projects/spring-boot/issues/6254. There are a number of different
                          workarounds, but this seems to be the cleanest.
@@ -487,6 +498,17 @@
 			<plugin>
 				<artifactId>maven-surefire-plugin</artifactId>
 				<configuration>
+					<!--
+                        Prevents the following warning introduced in JDK 21, caused by Mockito or more specifically byte-buddy-agent:
+
+                        WARNING: A Java agent has been loaded dynamically (/Users/khm/.m2/repository/net/bytebuddy/byte-buddy-agent/1.14.5/byte-buddy-agent-1.14.5.jar)
+                        WARNING: If a serviceability tool is in use, please run with -XX:+EnableDynamicAgentLoading to hide this warning
+                        WARNING: If a serviceability tool is not in use, please run with -Djdk.instrument.traceUsage for more information
+                        WARNING: Dynamic loading of agents will be disallowed by default in a future release
+
+                        NOTE. argLine property is set by JaCoCo in prepare-agent stage.
+                     -->
+					<argLine>-XX:+EnableDynamicAgentLoading ${argLine}</argLine>
 					<trimStackTrace>false</trimStackTrace>
 					<includes>
 						<include>**/*Test.java</include>