I am using Chocolatey to install Docker.
When I originally run the following command:
choco install docker
and try to run the "docker --version" command, everything goes as expected.
Docker version 17.10.0-ce, build f4ffd25
When I try to run "dockerd" command, it shows as not being part of my path.
'dockerd' is not recognized as an internal or external command,
Looking at the PATH variable, and navigating to where Chocolatey stores the executables, dockerd.exe is not present while docker.exe is. Am I missing something in instructing Chocolatey in adding dockerd?
The reason I need the dockerd executable is so that I can limit the number of concurrent downloads, as shown in the Docker documentation.
This is a decision that the package maintainer(s) for Docker have made. If you have a look here:
https://chocolatey.org/packages/docker#files
You will see that there is a dockerd.exe.ignore file. This file is used to instruct Chocolatey to explicitly not create what is referred to as a shim file, which would make it work from the command line, in the same way as Docker does.
My best suggestion would be to reach out to the maintainers of that package to ask them why this was done, and to perhaps get it changed. You can do this by clicking on the Contact Maintainers link on this page:
https://chocolatey.org/packages/docker
As a workaround, you could add the following path to your Windows PATH environment variable:
C:\ProgramData\chocolatey\lib\docker\tools\docker
Which would allow it to work.
Related
I am trying to build Pyodide from source on Windows. In their documentation they recommend using Docker. From the documentation:
1 Install Docker
2 From a git checkout of Pyodide, run ./run_docker or ./run_docker --pre-built
3 Run make to build.
I don't understand how to run ./run_docker?
I don't even know exactly what the file is. Is it a shell script?
Combining your question, "How do I run a script file in Windows?", with the information provided (you want to run a file called run_docker from the Pyodide project) you should get started by installing the Windows Subsystem for Linux version 2 (WSL). After you install WSL, you will need to open a command prompt, run bash to enter the Ubuntu linux distribution. From here you should follow the steps for building on Linux. When you run into a problem you can search the internet for solutions related to "Linux" or "Ubuntu".
I made the mistake of installing Docker via Snap... Once I realised that snap hadn't permissions to run in my working directory (on a different partition), I removed it. Now I can't use docker after I've installed it via apt-get.
Please help.
I've done sudo snap remove docker but when I sudo apt install docker and run via docker, I get bash: /snap/bin/docker: No such file or directory
The command you are looking for is:
sudo apt install docker.io
i.e it's docker.io not just docker
On Ubuntu, the package docker is described as a "System tray for KDE3/GNOME2 applications", which is probably not what you want!
I had the same problem. This works for me.
sudo snap remove docker
sudo reboot
the point is to restart the instance or terminal.
I hope this method can help
I did the same and just restarting the instance fixed it.
The problem is simply that your bash shell caches the locations of known executables, in order to avoid having to scan through your executables search path (that is, the directories listed in $PATH) every time you type a command. Because you have removed the executable from one directory (/snap/bin) and added it to another directory (/usr/bin), this cache is now out of date. This means that it will look in the wrong location if you try to invoke the executable simply by typing docker rather than its full path.
It is possible to fix it simply by starting a new bash shell, for example open a new terminal window and type the command in there.
Alternatively if you wish to refresh the cache in the terminal session that you are already using, type:
hash -r
It is not necessary to restart your computer (although this would also work).
I run some installation scripts via docker, they change ~/.bashrc but then I need to source it to use installed commands in RUN instructions below.
Tried obvious RUN . ~/.bashrc and got /bin/sh: 13: /root/.bashrc: shopt: not found error.
Tried RUN . ~/.profile and got mesg: ttyname failed: Inappropriate ioctl for device
I do not want to use ENV instructions. The point of having external installation scripts is to use them in non-Docker environments, for example when running unit tests locally. ENV instructions would duplicate environment setup which is already done in installation scripts.
You should not try to set up shell dotfiles in Docker. Many typical paths do not run them at all; for example
# In a Dockerfile
CMD ["some", "command", "here"]
# From the command line
docker run myimage some command here
The Docker environment is, fundamentally, different from a standalone Linux system; in addition to shell dotfiles, "home directory" isn't really a Docker concept, and if you have a multi-part process, on Docker it's standard to run each part in a separate container, but on standalone Linux you could use the init system to keep all of the parts running together. If you're expecting things to work exactly the same with exactly the same installation scripts, a virtual machine would be a better technological match for what you're attempting.
("Inappropriate ioctl for device" also suggests that there are things in the dotfiles that strongly expect to be run from an actual terminal, which you don't necessarily have at docker build time.)
My generic advice here is:
If possible, install things in the "system" directories within the image and avoid needing custom environment variable settings. (Don't use a version manager like nvm or rvm; don't use a Python virtual environment.)
If you do have to set environment variables, ENV is the way to do it.
If you really can't do either of the above, you can set environment variables in an ENTRYPOINT script before launching the main process; but if it's important to you that variables show up in docker inspect or docker exec shells, they won't be set there.
(Also remember that each RUN command launches a new container with a totally new shell environment. You can RUN . .profile; foo, but the environment variable settings won't carry through to the next RUN line.)
I have been trying http://predictionio.apache.org/install/install-docker/ this tutorial. I have successfully built Docker image however when I try to run docker run i get the Can't open /etc/predictionio/pio-env.sh error.
docker build -t predictionio/pio pio
docker run -ti predictionio/pio
PS: If I comment out the last line CMD ["sh", "/usr/bin/pio_run"] I can build and run docker image successfully. I can open the file too from docker bash.
I think you need to grant permissions to execute this file. add the following line at the end of your Dockerfile
RUN chmod +x pio_run.sh
also, you might need to change CMD to ENTRYPOINT like following:
ENTRYPOINT ["sh","/usr/bin/pio_run.sh"]
Your output states you are running Windows. Did you use the default command prompt or did you use docker terminal? I had the same error messages in the past on Windows but mysteriously it disappeared after trying the tutorial again. I am not sure what I did different except I might possibly used docker instead of the default command prompt...
Could you also try using docker-compose instead of plain docker commands as described in the tutorial?
Ensure your storage (Postgres, MySQL or ElasticSearch) is running before starting PIO as well.
Just resolved it on my machine.
When you cloned repository on Windows, git converted end of line symbols from Unix-style (\n) to Windows style (\r\n).
You need to open file C:\wherever-you-cloned-pio-repository\predictionio\docker\pio\pio_run and change it back (for e.g. using Visual Studio Code, or Notepad++). Then you need to rebuild the image and it should work.
Also for the future you may want to disable automatic conversion Disable git EOL Conversions
When I run parallelshell command (I installed parallelshell using npm install -g parallelshell), on the server, it works. But when Jenkins runs the command, I get the error, parallelshell command not found.
Why is Jenkins not recognizing the command? the command works for me when I log into the server.
Jenkins may be running under different user(That is default in Windows service, or linux installations). This will have different path variable and other user-specific settings.
You must give absolute path to command.