Mapping volumes - short command for local repo in W11

Docker Desktop
1

Hi all. Beginner to docker here and really pleased with how it’s going. At the moment I’m learning about volumes and specifically mapping host > docker filepaths. One thing I can’t seem to figure is the local repo shortcode to map.

All works good if provide fullpath e.g.
> docker run -v C:\Users\web1928\Documents\www\somefolder:/usr/share/nginx/html/:…

but I was trying to use path command without success
> docker run -v $(pwd):/usr/share/nginx/html/:…

If I just command line $(pwd) it does return the fullpath string, so I figured it should work. Can anyone shed any light on the correct command for this?

Thanks in advance

/Danny

2

$(pwd) works in linux shells (sh, bash, zsh, …). In Windows, you can try to replace it with $PWD in a powershell terminal or %cd% in a cmd terminal.

3

Didn’t it return a multiline output like this?

Path
----
C:\Users\username\test

pwd in Powershell is an alias to Get-Location. It works differently. If you don’t use it between quotation marks, it will return an output like above. You can try it:

pwd
echo $(pwd)
echo "$(pwd)"

You can use it this way with docker:

docker run -v "$(pwd):/usr/share/nginx/html/" ...

It was true, until they implemented it in Powershell so Linux users can use Powershell more easily :slight_smile:

1 Like
4

Good to know.

I also missed out that $PWD returns a multiline ouput as well. echo $(pwd).Path and echo $PWD.Path seem to return just the current working directory.

5

When trying to use this in the volume mapping, I shouldn’t need to use the echo command, should I?

e.g. > docker run --name mywebsite -d -p 80:80 -v echo $(pwd):/usr/share/nginx/html/ nginx:latest

6

pwd is executable. $() is not, it executes a command, so you need an executable before it. Obviously, you don’t need $() to run pwd. It is required only to use its output as an argument of an other command. I just used echo for the example, so you could see the result.