docker deskto (windows) - v20.10.17
WSL 2 backend
running a container in this way
docker run -p 4000:4000 -p 3000:3000 \
-v ${PWD}:/cube/conf \
-e CUBEJS_DEV_MODE=true \
cubejs/cube
on windows in the current folder i see some folders that comes from container (so i suppose the mountig folder is working)
then, if i create a new file from windows (in the mounted folder) i can't see that file in the container
the same appens if i create a file in the container (touch) i can't see that file in windows?
my docker version is the last and i've enabled WSL2 integration
this command in windows wsl --list show me these linux distributions (with this name) that i suppose they have been downloaded when i installed doker
docker-desktop-data (valore predefinito)
docker-desktop
Related
I got Docker Desktop installed on Windows with WSL2 support. Everything works as expected. When I run my containers with a volume mount docker run -it --rm -v W:\projects:/projects busybox i can access all my windows files inside this folder.
Sadly the performance isn't that great with windows shares inside docker, so i tried to mount a path from my wsl machine.
i was under the impression that docker would run inside wsl? So I expected the two commands to output the same:
docker run -it --rm -v /home/:/myHome busybox ls -l /myHome
wsl docker run -it --rm -v /home/:/myHome busybox ls -l /myHome
but the output using docker is just total 0 where as the output using wsl is my home directory.
Can someone explain to me where this /home directory is (physically / in wsl / my computer) when I run docker from windows? And is it possible to run docker and it runs wsl docker without symlinks / path modifications so i can mount my linux directory inside the container?
If wsl-2 is installed, you can access its file system by going to the following path :-
\\wsl$
/home wouldn't just work as its not physically present in Windows's file system
You can however use /home or any other linux based directories if you login to your wsl distro. Please note that the following command won't mount any volumes if you run it from windows. It should be run only from your wsl distro
docker run --name mycontainer -v /home:myhome busybox
To access the /home directory in an Ubuntu-16.04 distro from windows:-
\\wsl$\Ubuntu-16.04\home
You can replace Ubuntu-16.04 with your distro name - version
To mount any of the directories which is under wsl, ensure that you have turned on the option "Enable integration with my default wsl distro"
https://docs.docker.com/docker-for-windows/wsl/
To mount a wsl's directory from windows as a volume, provide your host volume path in the given format
docker run --name mycontainer -v \\wsl$\Ubuntu-16.04\home:/myHome busybox
Basically, docker run -v has an effect from which environment its being executed i.e either windows or wsl
And docker volumes are present in the following path if you have enabled wsl-2 for docker but don't want to use your distro's file system
\\wsl$\docker-desktop-data\version-pack-data\community\docker\volumes\
Hi I have a windows machine and I installed a docker desktop on it and created a ubuntu container on it.
In docker settings I checked my C: Drive under shared drive option. and I created a folder under /opt named /mydata in this container
Now I run this command:
docker my_container_name run -v /Users/john/Documents/DOCKER_FOLDER:/opt/mydata
But I don't see the files under DOCKER_FOLDER to be in /opt/mydata folder.
Not sure what I a doing wrong.
the right command is:
docker my_container_name run -v c:/Users/john/Documents/DOCKER_FOLDER:/opt/mydata ls /opt/mydata
so you need to specify the volume letter and a command to run
I am running the latest macOS (Sierra) with Docker and Kitematic installed. I am also using Virtualbox for emulation.
I want to use the uwsgi-nginx-flask image but I have no idea how I can make the python files and the nginx directory inside my container accessible from outside the virtual machine ?
Haven't found anything about that on the website either.
Folders between the host and containers can be mapped and mounted by using the -v tag during runtime.
$ docker run -it -v /host/directory:/container/directory imagename:tag
You can alternatively use docker cp to copy stuff inside and outside of the container. For example
$ docker cp /path/to/file ContainerName:/path/inside/container
or
$ docker cp ContainerName:/path/inside/container/file .
you can mount the host directory to docker container which will be shared between host and docker
docker run --name container_image -d -v ~/host_dir:/container_dir docker_image
I'm using docker container with ubuntu:14.04 and some C++ application that I compiled inside docker container.
Is it possible to run application that is inside container from host OS(in my case Win 7)?
Something like:
docker run <path-to-binary>/mybinary -f 10 -o output.txt
UPDATE:
Yes, it's possible
docker run -it <my-image> <path-to-binary>/mybinary
So ideally I want application inside docker will be just like native applications on Windows host OS.
Also is it possible to specify files and folder in host OS as input arguments to application that docker container can't see?
UPDATE:
I tried to mount shared folder at container start
docker run -v C:\shared_with_VM:/temp my_image
and also
docker run -v "C:\shared_with_VM":/temp my_image
But I get error:
C:\Program Files\Docker Toolbox\docker.exe: Error response from daemon: Invalid
bind mount spec "C:\\shared_with_VM:/temp": invalid mode: /temp.
See 'C:\Program Files\Docker Toolbox\docker.exe run --help'.
As said here right path format on Windows should be
docker run -v /c/shared_with_VM:/temp my_image
I am not sure if I correctly understand your question...
You can mount folders from your host to the container to make it accessible from within your container:
docker run -v /host/folder:/container/ -it <image> <executable> <arguments>
For example:
docker run -v /tmp:/tmphost -it ubuntu ls -al /tmphost
# or in Windows
docker run -v //c/Users/mrgloom/Desktop/data:/tmphost -it ubuntu ls -al /tmphost
This creates the folder /container/ in your container and links it with /host/folder. You can then bidirectonally read / write files inside these folders. Your binary has to point to the input file, which might be located in /container/input.txt
I am a beginner with docker and I am using a windows machine. But I have a problem mounting files using volumes. The documentation says the following thing about mount files on OSX and windows :
Official docker docs
Note: If you are using Docker Machine on Mac or Windows, your Docker daemon only has limited access to your OS X/Windows filesystem. Docker Machine tries to auto-share your /Users (OS X) or C:\Users (Windows) directory - and so you can mount files or directories using docker run -v /Users/<path>:/<container path> ... (OS X) or docker run -v /c/Users/<path>:/<container path ... (Windows). All other paths come from your virtual machine’s filesystem.
I have a small nginx Dockerfile:
FROM centos:6.6
MAINTAINER afym
ENV WEBPORT 80
RUN yum -y update; yum clean all
RUN yum -y install epel-release; yum clean all
RUN yum -y install nginx; yum clean all
RUN echo "daemon off;" >> /etc/nginx/nginx.conf
VOLUME /usr/share/nginx/html
EXPOSE $WEBPORT
CMD [ "/usr/sbin/nginx" ]
Creating a simple container
docker run -d --name simple -p 8082:80 ng1
8875448c01a4787f1ffe4c4c5c492efb039e452eff957391ac52a08915e18d66
Creating a container with a volume
My windows host directory
Creating the docker container with -v option
docker run -d --name simple2 -v /c/Users/src:/usr/share/nginx/html -p 8082:80 ng1
invalid value "C:\\Users\\src;C:\\Program Files\\Git\\usr\\share\\nginx\\html"
for flag -v: bad mount mode specified
: \Program Files\Git\usr\share\nginx\html
See 'C:\Program Files\Docker Toolbox\docker.exe run --help'.
Inspecting the ng1 image
docker inspect ng1
What is wrong when I am creating a docker container with a volume?
Thanks.
Try to run it with additional / for volume like:
docker run -d --name simple2 -v /c/Users/src://usr/share/nginx/html -p 8082:80 ng1
Or even for host OS, as
docker run -d --name simple2 -v //c/Users/src://usr/share/nginx/html -p 8082:80 ng1
Due to this issue:
This is something that the MSYS environment does to map POSIX paths to Windows paths before passing them to executables.
As the OP said:
Official docker docs :
Note: If you are using Docker Machine on Mac or Windows, your Docker
daemon only has limited access to your OS X/Windows filesystem. Docker
Machine tries to auto-share your /Users (OS X) or C:\Users (Windows)
directory - and so you can mount files or directories using
docker run -v /Users/:/ ... (OS X)
or
docker run -v /c/Users/:/
But if you want access to other directories, you need to add a new shared folder to the virtual box settings (Settings > Shared Folders > Add share).
Add there a new share (only possible when you stop the vm before, docker-machine stop:
path C:\Projects
name c/Projects
autoMount yes
Or edit directly the vbox configuration file
C:\Users\<username>\.docker\machine\machines\default\default\default.vbox
Add there into <SharedFolders> the line
<SharedFolder name="c/Projects" hostPath="\\?\c:\Projects" writable="true" autoMount="true"/>
Restart the machine:
docker-machine stop
docker-machine start
Now, it's possible to mount also directories with the base C:\Projects
docker run -v //c/Projects/myApp://myApp <myImage>
For anyone using docker ~> 1.12 and faces this issue. I spent 30min trying to figure it out until i realized you have to specifically share a drive first via docker settings, see:
https://docs.docker.com/docker-for-windows/#/shared-drives
If you're simply looking to access a local drive, the MINGW32 Docker Toolbox terminal puts the root of each drive in /<drive-letter>, so drive C:\ will be at /c/