Questions tagged [docker]

Docker - An open platform for distributed applications for developers and sysadmins.

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Mkdir creates dir with 777 permission when umask is 0022

I am creating directories inside a container, the user is root and the output of umask is 0022. But if I call mkdir to create new directory its default permission is 777, other than 755. Meanwhile, if ...
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Do we still need ProgramData\DockerDesktop\vm-data when using WSL2 backed Docker?

Do we still need ProgramData\DockerDesktop\vm-data when using WSL2 backed Docker or can that be removed?
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USB hard drives don't get detected after enabling these Windows 10 features (Virtual Machine Platform or Hyper-V or Widows Hypervisor Platform)

Information CPU - AMD Ryzen 1200 (SVM enabled) Running WSL with Ubuntu with no issues Windows 10 Pro Running Kaspersky Internet Security 2020 Problem - Cannot run none of them below mentioned as ...
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How to use debian mirrors in China during docker build without changing Dockerfile?

I'm working in China and want to use debian mirrors in China (e.g., mirror.lzu.edu.cn (202.201.0.16)) during docker build without changing Dockerfile. This is an example Dockerfile (test/Dockerfile). ...
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Docker external network affecting local host network on container restart : ERR_NETWORK_CHANGED

I am facing a weird issue with the docker networks. I am using an external network of bridge type named extenal_network in my docker containers with auto-restart enabled. I am not able to access my ...
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833 views

Getting error Cannot enable Hyper V service in Windows 10 , even though i have already enabled it in program&features

Getting error Cannot enable Hyper V service in Windows 10 , even though i have already enabled it in program&features Computer Management under Services and Applications / Services at Hyper-V ...
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15 views

Running docker and emulator at the same time goes to green screen

I'm always having the green screen of death with an error code KERNEL_SECURITY_CHECK_FAILURE with keywords: 0x8000400000000002 I realise that after a while, this problem is always there when I run ...
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3answers
880 views

Should I expect programs that run from a tmpfs folder to run faster? (with and without I/O, inside and outside a Docker container)

On Linux, suppose I have an executable file. Let's look at two cases: (A) A large portion of what the executable does is disk I/O; (B) the executable doesn't do any disk I/O. For each of the cases A ...
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Docker media machine setup (plex, sonarr, radarr,…)

I'm having issues with the tutorial I'm following. I'm currently busy trying to do the configuration of the separate containers, when I noticed that although all containers are up and running, some ...
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1answer
43 views

How can I debug when a cron job isn't executed in a certain docker container?

What I have done is: docker run --rm -it SomeCentOsBasedImage (in a docker container) yum update -y yum install -y vim cronie python3 vim /script.sh #!/bin/bash echo "a" &...
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Install-WindowsFeature : Containers - Error: The parameter is incorrect. Error: 0x80070057

I am trying to enable Containers feature in Windows Server 2016 but I am getting the following error: Install-WindowsFeature : The request to add or remove features on the specified server failed. ...
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72 views

Tunneling to Windows VM hosted on Linux from Jenkins Docker container

I am running a Linux Fedora workstation (Fedora 31) hosting a Windows 10 VM and a Jenkins server in docker (on Linux). I Need the Jenkins server (Linux) to connect to the Jenkins agent on the Windows ...
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1answer
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I want to ssh to my NAS and connect to a docker instance running there, how can I do this?

Setup: Windows 10 WSL Working commands to open a shell on the NAS and then connect to docker instance ssh admin@192.168.253.53 -i ./qnap_001.pem [~] # docker exec -it ubuntu /bin/bash root@ubuntu:/# ...
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Where bonding/interface details are present in container running in host mode?

While running a container with host networking, I am able to see the different host interfaces using '''ip a''' but am not able to find corresponding bond files in '''/etc/sysconfig/network-scripts/...
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32 views

DNS error when pulling Docker image

So i have Docker running in an Ubuntu Server 18.04 machine. It has been working like a charm till now that i have tried to pull a couple of images and the same error appeared both times. The error ...
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docker container resource management -constraints or allocations?

I have read and heard that docker's runtime options for memory, CPU and etc, don't actually allocate or reserve the host resources to the container, but rather limits their access to them. Meaning ...
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How to install Windows 10 Home 19018 update?

I'm using windows home edition, I have the latest update installed 1909. I want to install docker for windows 10 home edition. It keeps saying Docker Desktop requires Windows 10 Pro/Enterprise (...
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Docker toolbox quick start failed

I’ve downloaded docker on my PC, but it is not installing as I’m getting some errors: ERROR WITH PRE-CREATE CHECK - this computer doesn't have VT-X/AMD-v enabled. Enabling it in BIOS is mandatory. ...
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12 views

how to installed the latest docker version without dependencies issues

We prepare the following in order to install docker on rhel 7.5 version ( from the list https://download.docker.com/linux/centos/7/x86_64/stable/Packages/ ) , and only the latest curl https://...
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18 views

Virtualbox Host-Only network adapter breaks my company VPN connectivity

After creating a Docker VM on Windows via docker-machine with default settings the created host-only network adapter (192.168.99.x) makes my VPN not work anymore. i.e. all ssh attempts to VPN domains ...
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1answer
44 views

FTP client in a docker container

I'm trying to connect to an FTP server programmatically. The language of my choice is Python, which is simple enough: from ftplib import FTP ftp = FTP(host=FTP_HOST, user=FTP_USERNAME, passwd=...
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23 views

Who creates /etc/resolv.conf file under docker in Alpinelinux

I prepared my Alpinelinux docker image with a proper /etc/resolv.conf file but when I start it I found its content get changed, to: $ cat /etc/resolv.conf # This file is managed by man:systemd-...
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1answer
33 views

How to update tar to version 1.30+ in Ubuntu 16.04?

I work with the gitlab-ee docker image to install my local gitlab. This docker image has the OS Ubuntu 16.04 and can be found here: gitlab/gitlab-ee in hub.docker. Within these image tar in version 1....
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1answer
15 views

Upgraded docker but old configuration is running after reboot

I upgraded my Docker install on my Ubuntu system the other day. According to my docker version command I am on version 19.03.8 for the client and 18.09.9 on the server. I had my original docker-...
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1answer
20 views

lost ability to bind port 80 on mac, how to debug?

In the last few days I lost the ability to listen on port 80 with docker, and with nodejs without using sudo. Before, I could simply launch my exact same docker containers on port 80, and it would ...
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1answer
39 views

Docker containers cannot resolve DNS

I just installed docker on CentOS 8. Everything went fine, I’ve run the hello_world test container and the result was successful. The issue is that inside the containers I cannot resolve any DNS ...
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11 views

GPU Memory in TensorFlow container with NVIDIA SLI

I have constructed a machine-learning computer with two RTX 2070 SUPER NVIDIA GPUs connected with SLI Bridge, Windows OS (SLI verified in NVIDIA Control Panel). I have benchmarked the system using ...
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13 views

Pre-install docker container into Linux image

I have the following situation: I would like to distribute my own Raspbian image with some pre-installed and configured docker containers and, of course, docker as well. Actually I have tried to ...
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20 views

Pulling an Docker Image within a chroot environment

I am trying to create my own, custom Raspberry Pi image using Pi-Gen https://github.com/RPi-Distro/pi-gen Basically I was able to fulfill most of my requirements, but I got a problem while trying to ...
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1answer
19 views

Is there a way to manage switching between multiple Docker hosts

I've just set up a remote Docker host on a spare laptop I have and I'm able to access it by doing docker -H 192.168.1.201 run hello-world but I don't want to keep adding -H every time I want to run ...
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25 views

Docker: Key not valid for use in specified state error

Docker not working after installation with this error. System.Security.Cryptography.CryptographicException: Key not valid for use in specified state. at System.Security.Cryptography.ProtectedData....
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How to access host from within a docker container in a VMware Fusion guest system?

I've downloaded, installed and set up a Ubuntu 19.10 server running under VMware Fusion on my Mac running Catalina. I was able to connect the guest system to my host (after some help from Stack ...
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Issue setting up Docker on Windows 10 Home using WSL2

I am trying to set this up to be able to run a docker-compose setup on my Windows 10 Home with docker toolbox. I need WSL2 to be able to do port forwarding from the Docker container, through WSL2 and ...
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12 views

Sending input to docker attach

I have a dockerized server daemon that has a console. I can access it using docker attach <container> then run commands. How can send input to the console programmatically? Running something ...
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1answer
26 views

I am trying to install docker. Whenever i run sudo apt-get update, i get this error:

Hit:1 http://packages.microsoft.com/repos/vscode stable InRelease Get:2 http://repository.spotify.com stable InRelease [3,316 B] Hit:3 https:/...
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12 views

Theia Docker: Connect to SMB share

On a Theia Docker container, I would like to connect to an SMB share for the projects folder. I cannot do this through the host machine, and I need to do this through the docker container itself. ...
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61 views

How do I connect to external WIFI router from the docker container running in the macvlan?

What do I want to get: I want to be able to connect to multiple wireless routers from a single physical machine (Laptop), I can't change their configuration, so they have to be running DHCP server on ...
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29 views

Failed to start containerd: timeout waiting for containerd to start in dockerd-rootless.sh

System is Ubuntu 18.04. Docker Version:19.03.8 After trying to setup to run docker in rootless mode as explained here I can not do this, and I encounter error after running command dockerd-rootless.sh ...
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1answer
42 views

Give permission to acces /var/run/docker.sock on Synology NAS

I am trying to follow this guide to setup traefik properly on my DS918+. Everything seems to work normally but I can't actually launch it because Got permission denied while trying to connect to the ...
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32 views

How to install chrome browser in linux machine using bitbucket pipeline YML file?

I am executing selenium script (Selenium, Java & Maven) using bitbucket pipeline. Linux Machine does not have chrome browser, so I want to install chrome browser in Linux machine using YML command ...
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1answer
15 views

Docker: Connect docker container straight to hosts LAN

I have 2 docker containers, 1 running pihole and another running Nextcloud. Right now, they are both using the default bridge, pihole running on the hosts port 80 and Nextcloud on the hosts port 8080. ...
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47 views

Installing / Updating Docker Desktop on Mac without admin

I have a Mac where I do not have admin rights. I have requested and received temporary admin rights on the machine to install Docker. I just recently read that if we can install any software in a ...
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12 views

useradd can't find existing group when using --root parameter

I am trying to create new user in my docker image: FROM openjdk:8u252-jre-buster WORKDIR /myapplication RUN groupadd -r -g 1000 agroup RUN echo $? RUN getent group agroup RUN su -c 'useradd --...
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8 views

Upload to S3 from small container takes too long time

I have a container which is running a process that outputs files. Those files is then uploaded to S3 by using the aws s3 cp command. The files is about 325 kb and it takes about 4.5 seconds to upload ...
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94 views

How to run bluestacks on windows when a docker installation is in place?

I use docker for my work. It users Hyper-V. I want now to install bluestacks. It complains about having Hyper-V activated. Installed version is BlueStacksInstaller_4.190.0....
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42 views

FFMPEG Screen Capture audio choppy in the begining and video lag

I am trying screen grab with audio using FFMPEG. It is working perfectly on my laptop. But when I am running the same on headless server with Xvfb and pulse installed, the audio is choppy at the ...
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18 views

Docker fails to create default machine - Raw-mode is unavailable

I've been trying to create a default machine via Docker Quickstart Terminal (Win 10 Home) and am encountering a whole host of issues despite the fact it was working perfectly fine a few hours ago and ...
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22 views

WebRTC media server in docker - different behavior on different computers

I am evaluating different media servers (ant media server, openvidu) to stream IP cameras via webRTC to a react browser application. In the meantime, I'm observing peculiar phenomena that I can't ...
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0answers
19 views

SMTP-Docker not sending emails, what am I doing wrong?

Please bear with me, as I only started out with Docker a couple fo days ago. I created a brand new VM with CentOS 7 in our ESXi server. Setup Docker and Portainer with no issues. I wanted to create ...
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1answer
44 views

No networking out of Docker bridge

The gist of the issue is that if I create and run a docker container (from any image, I tried many) the container does not have external network access beyond the default bridge Docker creates; even ...

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