Are the paths still correct

[alnutile]

https://shippingdocker.com/docker-in-development/up-and-running/ references the path /opt

# Scaffold authentication views/routes
docker run -it --rm \
    -v $(pwd)/application:/opt \
    -w /opt \
    --network=phpapp_appnet \
    shippingdocker/php \
    php artisan make:auth

but the docker_compose file https://github.com/shipping-docker/php-app/blob/master/docker-compose.yml references /var/www/html

so when I change the example commands to that it then works?

docker run -it --rm \
    -v $(pwd)/application:/var/www/html \
    -w /var/www/html \

are one of these out of date or am I just missing the obvious :) thanks

[fideloper]

Hi!

So, this does still work! Either way is fine, as it doesn't matter where in the container we save the files - neither are out of date.

Here's why:

In the first example there, we're saying files on my host machine (Mac) at $(pwd)/application into the /opt directory in a new container (we're spinning up a new container with docker run, not re-using an already-running container).

We then set the working directory to /opt to whatever command we run is run relative to that directory.

So, within the container, /opt has the contents of my host machine's application directory. I then run the command within the /opt directory, where the files are.

In the second example, we're sharing the contents within the $(pwd)/application directory on the host machine yet again, except time this we put it into /var/www/html within the container, instead of /opt. The working directory of the container is set the /var/www/html directory so whatever command we run will be relative to that directory, which contains our application code.

The second example is more consistent with the docker-compose.yml file, but it doesn't matter, since both of these commands are spinning up new containers and can therefore put files anywhere it wants within the container.

I hope that makes sense! There's a lot of wrap your head around. It's sort of weird to think about containers as little processes were creating and destroying all the time - it's like when you realize that git branches are just pointers to a commit - they're cheap and easy to create and destroy. Analogously (I guess...might be a bad analogy), containers allow us to run one-off commands and the exit/destroy the container when done. We can decide to put the files anywhere we want within the container.

Note that the containers we're spinning up here to run these one-off commands are not the same ones that run the application code for use in a browser (altho they are based off of the same image).

We're just creating an additional container, running a job, and killing that container when done.

Let me know if I can get into any detail there, I'm not 100% sure I'm clarifying the part you may be confused on.

[fideloper]

Note also that a simpler way to run these commands, where you can worry less about the file paths (altho you have to worry about little bit) is to use docker-compose for that.

In that case:

docker run -it --rm \
    -v $(pwd)/application:/opt \
    -w /opt \
    --network=phpapp_appnet \
    shippingdocker/php \
    php artisan make:auth

Would become:

docker-compose run --rm \
    -w /var/www/html \
    php \
    php artisan make:auth

Where in:

• docker-compose run --rm - Run a new container, remove when done. The -it flags are assumed/automatic when run via docker-compose
• -w /var/www/html - Set the working directory to /var/www/html. You do have to get this path right to match the directory shared in the container via the docker-compose.yml config.
• php - We use the service named php within the docker-compose.yml file, which spins up a container based off of the image defined for that service
• php artisan make:auth - the command to run

[adamsafr]

Windows 10, Version 17.12.0-ce-win47 (15139), Compose 1.18.0

This case didn't work for me with /opt directory. Laravel tried to write cache in /opt/application/storage directory. But application directory didn't exist in /opt directory. I've replaced /opt by /var/www/html in docker run commands and now it's working.