File is not mounted with the directory

General
1

I am trying to mount a volume and although the volume gets mounted none of the files exist. I am running:

OS Version/build
20.04.6 LTS (Focal Fossa)

App version
Docker version 24.0.5, build 24.0.5-0ubuntu1~20.04.1
Docker Compose version v2.0.1

Here is my docker_compose.yml file:

version: '2'

networks:
    ros-network2:
        external: true

volumes:
    src:

services:
    ros-master2:
        image: ros:noetic
        command: roscore
        networks:
            ros-network2:
                ipv4_address: 172.21.1.5
    ros-visualizer1:
        tty: true
        image: ros_noetic
        container_name: jackal_v1
        build:
            context: .
            dockerfile: Dockerfile-1
        networks:
            ros-network2:
                ipv4_address: 172.21.1.14
        volumes:
            - src:/src
        environment:
            - ROS_MASTER_URI=http://172.21.1.5:11311
            - ROS_IP=172.21.1.14
        # command: python3 /src/jackal_visualizer1.py
    ros-visualizer2:
        tty: true
        image: ros:noetic
        container_name: jackal_v2
        build:
            context: .
        networks:
            ros-network2:
                ipv4_address: 172.21.1.15
        volumes:
            - src:/src
        environment:
            - ROS_MASTER_URI=http://172.21.1.5:11311
            - ROS_IP=172.21.1.15
        command: python3 /src/jackal_visualizer2.py
    ros-visualizer3:
        tty: true
        image: ros:noetic
        container_name: jackal_v3
        build:
            context: .
        networks:
            ros-network2:
                ipv4_address: 172.21.1.16
        volumes:
            - src:/src
        environment:
            - ROS_MASTER_URI=http://172.21.1.5:11311
            - ROS_IP=172.21.1.16
        command: python3 /src/jackal_visualizer3.py

When I comment out the command: as I did in service ros-visualizer1, and run

docker-compose exec ros-visualizer1 bash

I could see the /src directory but it is empty. When I run the services ros-visualizer2 and ros-visualizer3 with command: as shown in the docker-compose.yml file I get:

jackal_v2 | python3: can’t open file ‘/src/jackal_visualizer2.py’: [Errno 2] No such file or directory
jackal_v3 | python3: can’t open file ‘/src/jackal_visualizer3.py’: [Errno 2] No such file or directory
jackal_v3 exited with code 2
jackal_v2 exited with code 2

I am sure the files exist in my local directory:

ls src
jackal_visualizer1.py jackal_visualizer2.py jackal_visualizer3.py

I am new to docker-compose and new to the forum. Any help would be appreciated.

2

I found the problem. I had to add the environment variable ${PWD}/src onto the host path for the service volumes: mounts.