improved readme

Author: Vadym Kazulkin

spring-boot-3.2-docker-image-with-crac/Dockerfile

@@ -25,6 +25,8 @@ WORKDIR /function
 COPY --from=build /src/target/dependency/*.jar ./
 COPY --from=build /src/target/*.jar ./
 
+RUN sudo chown root:root $JAVA_HOME/lib/criu
+RUN sudo chmod u+s $JAVA_HOME/lib/criu
 
 # Set runtime interface client as default command for the container runtime
 #ENTRYPOINT [ "/usr/bin/java", "-cp", "./*", "com.amazonaws.services.lambda.runtime.api.client.AWSLambda" ]

spring-boot-3.2-docker-image-with-crac/template.yaml

@@ -179,12 +179,12 @@ Resources:
 
     Properties:
       PackageType: Image
-      ImageUri: !Sub ${AWS::AccountId}.dkr.ecr.eu-central-1.amazonaws.com/aws-spring-boot-3.2-java21-crac-custom-docker-image:v1
+      ImageUri: !Sub ${AWS::AccountId}.dkr.ecr.eu-central-1.amazonaws.com/aws-spring-boot-3.2-java21-with-crac-custom-docker-image:v1
       ImageConfig:
         Command: ["org.springframework.cloud.function.adapter.aws.FunctionInvoker::handleRequest"]
       Environment:
         Variables:
-           JAVA_TOOL_OPTIONS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Dspring.context.checkpoint=onRefresh -XX:CRaCCheckpointTo=/mnt/msg/crac"
+           JAVA_TOOL_OPTIONS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
            SPRING_CLOUD_FUNCTION_DEFINITION: getProductByIdHandler
       FunctionName: GetProductByIdWithSpringBootJava21DockerImageWithCRaC
       Policies:
@@ -221,7 +221,7 @@ Resources:
     Type: AWS::Serverless::Function
     Properties:
       PackageType: Image
-      ImageUri: !Sub ${AWS::AccountId}.dkr.ecr.eu-central-1.amazonaws.com/aws-spring-boot-3.2-java21-crac-custom-docker-image:v1
+      ImageUri: !Sub ${AWS::AccountId}.dkr.ecr.eu-central-1.amazonaws.com/aws-spring-boot-3.2-java21-with-crac-custom-docker-image:v1
       ImageConfig:
         Command: ["org.springframework.cloud.function.adapter.aws.FunctionInvoker::handleRequest"]
       Environment: