Docker : How to avoid Operation not permitted in D

Question

I created one docker image of sles12 machine by taking backing of all file system which are necessary and created one tar file. For creating docker image I run following command -

cat fullbackup.tar | docker import - sles_image

After that I run docker image in container using below command -

docker run --net network1 -i -t sles_image /bin/bash

note - I already set up networking in this docker container (IP address which I want).

Now In my docker container, some applications are already configured because that applications are available in sles12 machine from which I created this docker image. These custom applications are internally running some kernel low level commands like modprobe.

But when I starts my application, application will start correctly. I'm facing this error -

Operation not permitted

How I can give correct permissions so that it will not give me this error?

Answer 1

The Docker philosophy is: split your application into microservices and use a container for each microservice.

Docker container storage is not persistent. If you remove the container, your data will be lost. You need to use Docker volumes, or bind mounts to persist your data.

Now if you want to go againts all that, and put couple of services in a Docker container (not recommended), I recommend at least using a Dockerfile to create it from a base image. These base images, available in DockerHub (library) are optimized for containerized environments, and you can install and configure your services as you see fit in that image.

Answer 2

You might try set the Docker container with Runtime privilege and Linux capabilities, with the

docker run --privileged