thank you Pierre,I have solved it buy edit dockerfile
WORKDIR $SONARQUBE_HOME/conf
RUN sed -i 's/#sonar.web.javaOpts=-Xmx512m/sonar.web.javaOpts=-Xmx2048m/g' sonar.properties
RUN sed -i 's/#sonar.ce.javaOpts=-Xmx512m/sonar.ce.javaOpts=-Xmx2048m/g' sonar.properties
RUN sed -i 's/#sonar.search.javaOpts=-Xms512m -Xmx512m/sonar.search.javaOpts=-Xms2048m -Xmx2048m/g' sonar.properties