Fixes Problem with maven CLI in Submodel Service when using buildx (#725)

Author: aaronzi

basyx.submodelservice/basyx.submodelservice.component/Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: Download the AAS4J dependency
-FROM maven:3.9-eclipse-temurin-17 AS maven-downloader
+FROM --platform=$BUILDPLATFORM maven:3.9-eclipse-temurin-17 AS maven-downloader
 ARG AAS4J_VERSION=1.0.4
 WORKDIR /download
 RUN mvn -B org.apache.maven.plugins:maven-dependency-plugin:3.6.0:get \
@@ -30,4 +30,4 @@ EXPOSE ${SERVER_PORT}
 HEALTHCHECK --interval=10s --timeout=3s --retries=10 --start-period=5s \
   CMD curl --fail http://localhost:${SERVER_PORT}${SERVER_SERVLET_CONTEXT_PATH%/}/actuator/health || exit 1
 
-ENTRYPOINT ["java", "-jar", "basyxExecutable.jar"]
+ENTRYPOINT ["java", "-jar", "basyxExecutable.jar"]