Problem completing "Bind Mounts" section of this tutorial

Hello! I am very much enjoying learning docker through this getting-started tutorial. However, I am having problems completing the Bind Mounts section. It seems the following command is invalid (what is the $PWD doing?):

docker run -dp 3000:3000 \
    -w /app -v $PWD:/app \
    node:12-alpine \
    sh -c "yarn install && yarn run dev"

Also, there do not seem to be full front to back steps on what to do after running this command (which causes an error on my terminal session):

docker: invalid reference format: repository name must be lowercase.

If someone could look into this that would be great - because I’ve already learned a lot in the first several steps!

Thank you much - Andrew

[stetogias]

I’d just like to leave this here as a comment for anyone having a problem

If you run the command outside the app directory it returns and ID, throws no errors but the container is not running. docker ps returns nothing. It would be nice to have this stated in the tutorial.

tried it on linux (Pop!_os) as a non-root user

[zqcccc]

Thanks! It works!

The only way I could get this section “working” - not sure if it actually works yet, just that it returned a container id, and didn’t throw an error - was by turning the command into a one-liner. From:

docker run -dp 3000:3000 \
    -w /app -v ${PWD}:/app \
    node:12-alpine \
    sh -c "yarn install && yarn run dev"

To:

docker run -dp 3000:3000 -w /app -v ${PWD}:/app node:12-alpine sh -c "yarn install && yarn run dev"

Every time I tried to run it as-is in the tutorial, it’d throw a whole bunch of errors about terms not recognized. I’m using docker desktop on windows with powershell.

Hope this helps someone 😊