jenkins in docker can not execute in host machine

Question

i have jenkins install on docker. the jenkins have some CICD tasks that need to copy file on host machine.

here is my docker-composer:

  jenkins:
    image: 'bitnami/jenkins:2'
    ports:
      - '10080:8080'
      - '10443:8443'
      - '50000:50000'
    environment:
      - JENKINS_PASSWORD=admin@123
      - JENKINS_USERNAME=admin
    volumes:
      - ./jenkins-data:/bitnami/jenkins'
      - ../../:/bitnami/apps
    restart: always

and my task have the cp command like

cp -r $WORKSPACE/* /home/ubuntu/eshop

and the result allways:

cp: failed to access '/home/ubuntu/eshop': Permission denied
Build step 'Execute shell' marked build as failure
Finished: FAILURE

i had checked all the permission of the folder (777 for ensuring). and change the owner to group docker. but nothing change.

i run docker without su, follow guide of docker official

what wrong with my installing?