Logging Driver is Always loading file from the system

[eygtmbot]

Hello,
I'm trying to install splunk logging driver on my swarm master. Here is the stack file I'm using

version: '3'
services:
  web:
    image: "${DOCKER_IMAGE_PATH}/:${RELEASE_TAG}"
    ports:
      - "8080:8080"
      - "8081:80"
    deploy:
      replicas: 3
    build:
      context: ../../
      dockerfile: ../Dockerfile-js
    environment:
      - PORT=80

#    restart: unless-stopped
    logging:
       driver: splunk
       options:
          splunk-url: "${SPLUNK_URL}"
          splunk-token: "${SPLUNK_TOKEN}"
          splunk-capath: "/mnt/splunk-ca-cert.pem"
          splunk-caname: "${SPLUNK_URL}"
          splunk-insecureskipverify: "false"
          tag: "{{.Name}}/{{.ID}}"
          labels: "NEurope"
          env: "${TARGET_NAME}"

When I'm running docker stack create -c filname.txt stack_name its searching for splunk-capath: "/mnt:/mnt/splunk-ca-cert.pem file in local system. I already copied this file in the container(when image built) same location but stack file is searching in the system instead of container. How can i make my stack file to look for the file inside the container???

Any help will be appreciated !!!

Thanks