Azure FileShare - Mounting specific folder to Azure Multi-Container Web App

Panayiotis Alexandrou 11

Hi all,

I am having troubles connecting a specific folder as a mount point on an Azure Multi-Container Web App, using Docker Compose.

Please see below for example images showing my configuration:

a) I have setup a Storage Account, as well as a FileShare:

Note that I have also created 4x folders there.

b) I setup an Azure Container App using a Docker-Compose File (Which also has SSH connectivity enabled)

c) I added a Path Mapping pointing to the /proxy location of the FileShare as shown:

d) I then added the example docker-compose file to startup the app:

e) I am then trying to enter the container using SSH to verify the volumes:

f) It looks like the volumes are created as expected, but when I drill into /app/test it shows all 4x folders at the root of the fileshare, instead of only the /proxy location.

Any idea why I am getting this behavior? Thank you in advance for your assistance.

Sumarigo-MSFT 43,406 Reputation points Microsoft Employee

2022-10-10T14:52:59.01+00:00

@Panayiotis Alexandrou Firstly, apologies for the delay in responding here and any inconvenience this issue may have caused. I am checking on this thread
Panayiotis Alexandrou 11 Reputation points

2022-10-11T05:35:09.343+00:00

Thank you @Sumarigo-MSFT ! Looking forward to hearing from you at your earliest convenience.
Mike Urnun 9,651 Reputation points Microsoft Employee

2022-10-12T04:39:32.923+00:00

Hello @Panayiotis Alexandrou - Could you confirm if you're having this issue with WebApp for Containers or Azure Container Apps?
Panayiotis Alexandrou 11 Reputation points

2022-10-12T06:05:54.633+00:00

Hi @Mike Urnun . I think it is Azure Container Apps. To be more precise, I am using a Linux App Service Plan and then Hosting a Multi-Container Web App (Linux, Containers) using a Docker-Compose file.
Mike Urnun 9,651 Reputation points Microsoft Employee

2022-10-12T06:18:09.59+00:00

Thanks, @Panayiotis Alexandrou Are you sure? I wanted to confirm because we do have a tutorial on Create a multi-container (preview) app in Web App for Containers which is a feature of App Service that I thought you might be using.

With Azure Container Apps, on the other hand, you deploy via image hosted on Container Registries, runs on managed Kubernetes which can scale etc..
Panayiotis Alexandrou 11 Reputation points

2022-10-12T06:33:39.517+00:00

Hi Mike. Apologies. I thought you were referring to Azure Container Instances (I must have been seeing an older version of the thread). WebApp for Containers seems like the option we went with. I came across that tutorial you have linked, but we have used the browser to set this up instead of the CLI tool
Sumarigo-MSFT 43,406 Reputation points Microsoft Employee

2022-10-15T05:42:10.75+00:00

@Panayiotis Alexandrou You can refer to this blog : https://jennylaw.azurewebsites.net/posts/bring-your-own-storage/
Panayiotis Alexandrou 11 Reputation points

2022-10-17T13:48:32.79+00:00

Hi Sumanth,

Thank you for your answer. I'll give that a go and get back to you as to how it goes.
Sumarigo-MSFT 43,406 Reputation points Microsoft Employee

2022-10-19T04:41:04.79+00:00

@Panayiotis Alexandrou The mount path refers to where the BYOS volume will be mounted inside the container. It is a property for single container. In multi-container scenario, that property is ignored, and the mount path is defined in the compose yaml for each container. Regardless, App Service will mount the entire volume at mount path.
Mike Urnun 9,651 Reputation points Microsoft Employee

2022-10-26T05:54:40.617+00:00

Hey @Panayiotis Alexandrou - Just checking back in, were you able to get this working?
Panayiotis Alexandrou 11 Reputation points

2022-10-26T08:54:04.963+00:00

Hi @Mike Urnun , unfortunately I did not get it to work the way I expected it to be working. As per @Sumarigo-MSFT message it is expected for the whole FileShare to be mounted at the root path of the container, in a multi-container scenario. This is not what I had hoped to hear as I do not have the option to register a different FileShare per folder I want to map. We require 10+ volumes within our app and I believe only 5 is allowed in a single Web App.