CODEWITHSUNDEEP
pythonopencvdocker
sakurashinken
sakurashinken

Reputation: 4078

Open CV error failed to init raw1394 persisting in docker

I am running ubuntu 14.04 in a docker container and have opencv installed. Every time it runs I recieve the following error as described here: OpenCV: libdc1394 error: Failed to initialize libdc1394. The technique of linking /dev/null to the device file seems to work, but it is not persistent in the docker container, and even though I have

RUN ln /dev/null /dev/raw1394

in my docker file if I run something like 

docker-compose run <container> bash

the error will persist in that session. What line can I add to my docker file that will get rid of this error message?

Upvotes: 2

Views: 919

Answers (1)

Nehal J Wani
Nehal J Wani

Reputation: 16639

Running ln /dev/null /dev/raw1394 inside the Dockerfile won't help you because /dev is not part of the docker image. You can get around this by adding a volume mount. An example Dockerfile and docker-compose.yml would look like this:

[fedora@myhost ~]$ cat Dockerfile 
FROM ubuntu:14.04
RUN apt-get update && \
    apt-get install -y \
        libdc1394-22-dev \
        libdc1394-22 \
        libdc1394-utils \
        python-opencv && \
    rm -rf /var/lib/apt/lists/*

[fedora@myhost ~]$ cat docker-compose.yml 
version: '2'
services:
  opencv:
    build: .
    command: python -c "import cv2; print cv2.__version__"
    volumes:
      - /dev/null:/dev/raw1394

[fedora@myhost ~]$ sudo docker-compose up  
Recreating fedora_opencv_1
Attaching to fedora_opencv_1
opencv_1  | 2.4.8
fedora_opencv_1 exited with code 0

Upvotes: 3

Related Questions