I have enabled user namespaces and now I wanted to run a docker container with –privileged flag, yes I know it’s a bad practice but still I wanted to run that docker as –privileged. But I can see this error pops-up, so was curious what is this error? What am I doing wrong? docker: Error response from daemon: privileged mode
Tag: docker
How does OCI/runc system path constraining work to prevent remounting such paths?
The background of my question is a set of test cases for my Linux-kernel Namespaces discovery Go package lxkns where I create a new child user namespace as well as a new child PID namespace inside a test container. I then need to remount /proc, otherwise I would see the wrong process information and cannot lookup the correct process-related information,
Docker nginx php permissions issue
I’m just learning Docker and took on a little pet project and wondering if something is possible permission wise with docker/nginx/php. I’m attempting to convert an old IIS-Windows/php/MySql project of mine to Docker/nginx/php/mysql I’m most of the way there and have the 3 containers linked and all is working well EXCEPT, this system has a file upload/view/delete component to it.
Docker – is it safe to switch to non-root user in ENTRYPOINT?
Is it considered a secure practice to run root privileged ENTRYPOINT [“/bin/sh”, entrypoint.sh”], that later switches to non-root user before running the application? More context: There are a number of articles (1, 2, 3) suggesting that running the container as non-root user is a best practice in terms of security. This can be achieved using the USER appuser command, however
What’s the difference between docker run –device and docker run –volume?
If everything is “just” a file in linux, how do files/nodes in /dev differ from other files such that docker must handle them differently? What does docker do differently for device files? I expect it to be a shorthand for a more verbose bind command? In fact, after just doing a regular bind mount for a device file such as
Docker bind source path does not exist even though it does
I have two ubuntu server VMs running on the same proxmox server. Both are running docker. I want to migrate one container from one of the VMs to the other. For that I need to attach a USB drive to the target VM which will be mounted inside the docker container. I mounted the drive exactly the same way in
Save multiple docker images using one command
Currently I am exporting docker images using below command docker save imageName | gzip > imageName.tar.gz docker save mysql | gzip > mysql.tar.gz This command working fine for single image, i have tons of docker images in my local system, want to export. but i don’t know how to export all images which is available in docker images. Please guide
docker run failed at “python3: can’t open file”
My code is in directory /test-scripts, details structure is as follows. Run the following command in directory /test-scripts. /test-scripts(master)> And my Dockerfile content is as follows. Use $user, $pwd above to replace the real value in this question. In my opinion, the file IssueAnalyzer.py will be copy from current directory /test-scripts to /testdocker, but actually it is not. Please help
“protoc: not found” on an Alpine-based Docker container running Protocol Buffers
I’m trying to build a simple container which downloads a Protocol Buffers binary from the release page (https://github.com/protocolbuffers/protobuf/releases/tag/v3.13.0) and adds it to the path. Following the Linux instructions at http://google.github.io/proto-lens/installing-protoc.html, I’ve attempted the following Dockerfile: The problem is that if I build it using and run a shell in it, I get a protoc: not found error, even though the
How to get Docker desktop on Ubuntu?
I am new to Docker/Kubernetes and trying to see if there is a way to get ‘Docker Desktop’ like functionality on Ubuntu, which is my primary development machine. All I know from my search is that the ‘Docker Desktop’ is only from Windows and Mac. It contains many useful tools bundled together as below which is great for someone like