build: dockerfile fix

Dockerfile

@@ -1,15 +1,15 @@
-FROM eclipse-temurin:21-jre
+FROM eclipse-temurin:21-jre-alpine
 
 WORKDIR application
 ARG JAR_FILE=starter/build/libs/portal-server*.jar
 COPY ${JAR_FILE} /application/application.jar
 COPY starter/src/main/resources/application.yml /application/config/application.yml
 COPY starter/src/main/resources/docker/.env /application/config/.env
 
-ENV JVM_OPTS="-Xmx512m -Xms2048m" \
+ENV JVM_OPTS="-Xmx2048m -Xms512m" \
     APP_OPS="--spring.config.import=optional:file:/application/config/.env[.properties]" \
     TZ=Asia/Shanghai
 
-ENTRYPOINT [ "java", "${JVM_OPTS}", "-jar", "/application/application.jar", "${APP_OPS}" ]
+ENTRYPOINT [ "sh", "-c", "java ${JVM_OPTS} -jar /application/application.jar ${APP_OPS}" ]
 
 EXPOSE 8080

starter/build.gradle

@@ -36,6 +36,8 @@ graalvmNative {
     toolchainDetection = true
     binaries {
         main {
+            imageName = 'portal-server'
+            mainClass = 'org.funcode.portal.server.starter.PortalServerApplication'
             verbose = true
         }
     }