History:
My docker build file worked for years, without any problem, on my Linux Mint VM. When I needed to recreate the VM, I installed everything again, including docker.io.
I'm taking a beating with this error. I already verified that the final file is inside the docker image, but when I try to copy it to a directory external to the container, it says that it does not exist.
I followed the guidelines at Exploring Docker container's file system and verified that the file was in fact in the container.
Environment:
Linux Mint 19 (Tricia)
Docker installed by snap
Command:
docker cp {CONTAINER_ID}:/container_path /local_path
Problem:
stat /container_path: no such file or directory
The solution was simply to uninstall the docker by snap and install it again by apt. This solution still lacks more information, as it is not known if the problem was really caused by the version of the docker installed by snap.
sudo snap remove docker
sudo apt install docker.io
Related
I need to install python 3 on my virtual machine (I have python 2.7) but I don't have access to internet from my VM. Is there any way to do that without using internet I have access to a private gitlab repository and private dokcer hub.
Using GitLab
Ultimately, you can put whatever resources you need to install Python3 directly in GitLab.
For example, you could use the generic packages registry to upload the files you need and download them from GitLab in your VM. For example, you can redistribute the files from python.org/downloads this way.
If you're using a debian-based Linux distribution like Ubuntu, you could even provide the necessary packages in the GitLab debian registry (disabled by default, but can be enabled by an admin) and just use your package manager like apt install python3-dev after configuring your apt lists to point to the gitlab debian repo.
Using docker
If you have access to dockerhub, technically you can access files from docker images as well. Here I'll assume you're using ubuntu or some debian-based distribution, but the same principle applies for any OS.
Suppose you build an image:
FROM ubuntu:<a tag that matches your VM version>
# downloads all the `.deb` files you need to install python3
RUN apt update && apt install --download-only python3-dev
You can push this image to your docker registry
Then on your VM, you can pull this image and extract the necessary install files from /var/cache/apt/archives/*.deb in the image then install using dpkg
Extract files from the image (in this case, to a temp directory)
image=myprivateregistry.example.com/myrepo/myimage
source_path=/var/cache/apt/archives
destination_path=$(mktemp -d)
docker pull "$image"
container_id=$(docker create "$image")
docker cp "$container_id:$source_path" "$destination_path"
docker rm "$container_id"
Install python3 using dpkg:
dpkg --force-all -i "${destination_path}/*.deb"
Background
I am using docker to do a school project. Specifically, I pulled an ubuntu image and here is the system config:
I then logged into the docker container (ubuntu) and set up elasticsearch. When I try to run
./bin/elasticsearch
I get the following error inside the docker container's terminal
/lib64/ld-linux-x86-64.so.2: No such file or directory
I have two main confusions:
what does that even mean?
How to solve it?
If you are running this on an M1 macbook, it's possible that you are running a native Arm image of ubuntu, instead of the emulated x86 image. If the elasticsearch distribution you are trying to install is for x86_64, then it attempts to link to the x86-64-native ld.so, which of course isn't present on different platforms.
Either install the package for the arm platform specifically if they provide one, or - more likely - run docker explicitly as the emulated x86_64 platform:
docker run --platform linux/x86_64 <image>
For docker-compose, add platform: linux/x86_64 according to the docs
services:
my-app:
platform: linux/x86_64
No idea what you are running in your container but for me, the reason was simply because a package (Prisma https://github.com/prisma/prisma/issues/8478#) did not find openssl packages and installing them on alpine image failed even with openssl manually installed.
It was fixed by switching to slim image and installing openssl with apt-get update && apt-get -y install openssl. I highly recommend not changing your platform since with my M1 the build time increased by 200s using linux/x86_64.
Completing #misnomer answer, I could not even build the image.
If that is the case just add FROM --platform=linux/x86_64 ..., from this source. Ex: FROM --platform=linux/x86_64 python:slim ...
Assumptions and what you want to achieve
I can't find "dokcer" command after installing with "sudo apt install docker" on Linux.
How do I use docker on Linux?
Also, if this is a PATH problem, I'd like to know which folder it was in.
Occurring problems and error messages
bash: docker: command not found
The corresponding source code
$ docker
Supplementary information (e.g. FW/tool version)
MX Linux
Translated with www.DeepL.com/Translator (free version)
try:
sudo apt install docker.io
Then you would have docker cli command
I have a machine which has no internet connectivity and no access to any docker repository (so no image pulls are possible). I want to install memcached and I have the .rpm file available.
When I want to install on the host machine I execute the command rpm -ivh memcached-1.4.15-10.el7_3.1.x86_64.rpm . But I suppose that is because the rpm package manager comes pre-installed on the host OS.
In the docker container I load the .rpm file and in the dockerfile I include the command RUN rpm -ivh memcached-1.4.15-10.el7_3.1.x86_64.rpm. After that I get the following error:
/bin/sh: 1: rpm: not found
The command '/bin/sh -c rpm -ivh /home/memcached-1.4.15-10.el7_3.1.x86_64.rpm' returned a non-zero code: 127
I suppose that is because in a docker container the OS has the bare minimum installation. So how do I install the rpm package manager inside the container without internet connection? Is there an installable file for it.
I understand it is not the best practice to not use a central repository for images. Want to know if installing without internet is even possible?
I am creating the container on a CentOS machine right now. And following is the dockerfile:
FROM microsoft/dotnet:2.0-runtime
WORKDIR /home
#mempkgtest folder contains the .rpm file
COPY ${source:-mempkgtest} .
RUN rpm -ivh /home/memcached-1.4.15-10.el7_3.1.x86_64.rpm
ENTRYPOINT ["dotnet", "--info"]
Docker image microsoft/dotnet is build on top of buildpack-deps:jessie-scm (from here) which is build on top debian:jessie (from here and here).
debian does not use rpm package manager, it uses deb format for packages. /bin/sh kindly informs you, that is hasn't found rpm manager by saying /bin/sh: 1: rpm: not found. You can read how to install rpm packages on debian here.
Anyway, why don't you use deb file and dpkg package manager? You can find memcached pacakge for debian jessie here. You can do smth like this in your dockerfile:
ADD http://ftp.us.debian.org/debian/pool/main/m/memcached/memcached_1.4.21-1.1+deb8u1_amd64.deb
RUN dpkg -i memcached_1.4.21-1.1+deb8u1_amd64.deb
And remember, you will need to copy dependencies too.
Why don't you make your docker image on machine with internet access, than export docker image using docker export and then copy and import it on your destination machine? Such way is simpler and apt-get will resolve and install all memcached dependencies for you.
I am running Jenkins in docker from official docker hub .
I created job which runs my own shell script, however I see some binaries
are missing in docker e.g.file command.
They mention on docker hub that one can install additional binaries over Ubuntu's aptitude however I don't know which package to install to get e.g file command working.
Unless Ubuntu did something different than the base Debian environment, file is included in the file package.
apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -f file