[New azd-template] Flask container with CDN

[pamelafox]

New azd-template Submission

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1. Description

1-2 sentence description of the architecture or solution that is defined by the template. If this is a requested template, please tag the GitHub issue containing the request.

A simple photos website written with Python Flask and Bootstrap. Can be run locally with Docker and then deployed to Azure Container Apps with an Azure CDN in front.

2. Author Information

Name: Pamela Fox

Link: https://github.com/pamelafox

3. Template Repo

The GitHub repo containing the template being contributed-- must be a valid, complete template

https://github.com/pamelafox/flask-gallery-container-app

4. Link to PR where you made your repo azd compatible

To allow us to provide feedback on your template, please include a link to the PR where you added azd compatibility

Sorry, there's not one particular PR, but you can check azure.yaml, the infra/ folder, and .github/workflows.

5. Tags

Standard: One or more tags representing the template. Look at the currently available tags on the Gallery page. Provide at least 1 tag for programming language used and at least 1 tag for Azure services integrated. Also tag the IaC provider (Bicep or Terraform)

Python, Flask, Web Apps, Azure Container Apps

Additional: Don't see a relevant tag for your template? Suggest tags to be added and used for your template. These could be new languages, services, or application domains.

Azure CDN

6. Architecture Diagram or Application Screenshot

Used as display image for gallery card-- should include all services and their connections. Example

7. Related Issues (optional)

Is this a template that was requested in a separate issue? If so, please tag the related issue here.

Next Steps

Once submitted, the issue will be reviewed - we plan to do reviews on a rolling basis at regular intervals. The process will include verifying all information required for the template gallery is provided and the template works (i.e., successfully deploys to Azure with azd up).

• If we have questions or enhancements, we will add comments in issue thread (issue stays open)
• If the contribution is approved, we'll update the gallery directly (issue will then be closed)

[rajeshkamal5050]

@v-xuto can you do a dry-run on this template and update here for any issues/feedback?

[v-xuto]

@pamelafox We have finished testing this template. There is only one small issue, the discussion link in README is unavailable, please update README.

[pamelafox]

Thanks! I've removed the link and just bolded the word (it's a tab on the Github page, so fairly easy to find).

[jongio]

@pamelafox - Can you get your new resources in azure-dev/core?

[pamelafox]

Do you mean the CDN stuff? The most reusable bit is the CDN profile:
https://github.com/pamelafox/flask-gallery-container-app/blob/main/infra/cdn-profile.bicep

The endpoint is a lot more variable since it depends what rules you want:
https://github.com/pamelafox/flask-gallery-container-app/blob/main/infra/cdn-endpoint.bicep

If I made the CDN endpoint into a module, devs would still need to pass in their lengthy rules (and possibly other customizations). But maybe it's still useful?

[v-xuto]

@pamelafox Please add expected results for try '/hello?name=yourname' on the Readme.

[pamelafox]

I've updated the readme step to say "Confirm the photos load on the index page and click a photo to see the order page."
Good catch!

[v-xuto]

@jongio We have run this template without any issues. Please review it.

[pamelafox]

After a discussion with some App Service and ACA PMs last week, I've realized that websites aren't the most appropriate use of ACA. A website should be hosted as a BYOC Web App, which azd does not yet support (Azure/azure-dev#1608).
This article goes more into optimal uses of ACA:
https://learn.microsoft.com/en-us/azure/container-apps/compare-options

So my proposal is to table this template until azd supports BYOC, and I will submit another template instead that's more of a service than a website. It's nearly done, will send today. The infrastructure will be the same.

@jongio I'll also send a PR for cdn modules in azure-dev infra.

[pamelafox]

Another option: I could also turn this into an App Service template, since App Service + CDN would be a standard combo.

[pamelafox]

Here's my API-oriented version of this architecture:
#98

[pamelafox]

Update: I ran the numbers today on my personal websites, and hosting on ACA with a CDN in front is actually much more cost effective than App Service + CDN, due the way ACA pricing is done. My ACA is $3 ($0 for the CDN at my traffic level), whereas App Service is $12.
So another reason for ACA plus CDN being a viable option.

[jongio]

[rajeshkamal5050]

@hemarina please add it to the gallery