Custom standalone app templates are not shown in Custom Templates page

[msuksong]

Bug description
I created a custom template with type 'standalone'. Creating looks done successfully but it is not shown in the Custom Templates page.

Expected behavior
Created custom template should be listed in Custom Templates page.

Portainer Logs
2021/01/20 01:39:31 http error: Invalid JWT token (err=Invalid JWT token) (code=401)
2021/01/20 01:39:31 http error: Invalid JWT token (err=Invalid JWT token) (code=401)
2021/01/20 01:39:31 http error: Invalid JWT token (err=Invalid JWT token) (code=401)
2021/01/20 01:39:31 http error: Invalid JWT token (err=Invalid JWT token) (code=401)

I can only see these logs but it doesn't seem related to the symptom.

Steps to reproduce the issue:

1. Go to 'App Templates -> Custom Templates'
2. Click on 'Add Custom Template'
3. Write Title, Description and Select Type 'Standalone'
4. Write docker compose file in the Web editor
5. Click 'Create custom template'
6. Shows 'Custom template successfully created' message but template is not listed.

Technical details:

• Portainer version: 2.0.1
• Docker version (managed by Portainer): 19.03.8
• Kubernetes version (managed by Portainer): N/A
• Platform (windows/linux): Ubuntu 20.04.1 LTS
• Command used to start Portainer (docker run -p 9000:9000 portainer/portainer): sudo docker stack deploy -c portainer-agent-stack.yml portainer
• Browser: Google Chrome

Additional context

I can deploy a standalone app from a pre-defined standalone app template. e.g. nginx
My Portainer is managing a docker swarm cluster.

[PortainerSupport]

Ticket update by Anthony McMahon ([email protected])

This is working as designed. The underlying principle of Portainer is to enforce best practice across all functions, including Swarm. When using swarm, you should always use Swarm services and not containers.

I am going to retag this as a feature request and notify our product team for consideration.

[iay]

I have the same behaviour, arrived at by a different route. I created a custom type=Swarm template, then flipped the type to Standalone in an edit. It wasn't obvious to me what the two options meant, so I wanted to find out.

The custom template disappeared, but is not gone and apparently can't be accessed anywhere in the UI. This means that, for example, it's no longer possible to delete the template, create a new one with the same name, or flip it back to type=Swarm.

If you're in Swarm mode, then, why is the option of "Standalone" (which I am guessing from the "use Swarm services and not containers" comment above) available at all?

Is there a way at present to delete a template outside the UI? I can see that the file itself is stored in the data volume under custom_templates/1 but the metadata is presumably stored in the database.

[deviantony]

@iay this sounds like a separate bug, would you mind opening a separate bug report for it? That'd be great, thanks!

The only solution I can think about for your problem would be to use the API and send a DELETE request to remove the custom template.

[iay]

@deviantony done, see #4743. Cheers.

[deviantony]

Thanks!