Fix: remove "examples" from application > Docker

[judu]

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Describe the content you'd like to see

The "Configure your Docker application" section in https://developers.clever-cloud.com/doc/applications/docker/ contains a few sections that don't belong there:

• https://developers.clever-cloud.com/doc/applications/docker/#dockerized-rust-application-deployment
• https://developers.clever-cloud.com/doc/applications/docker/#dockerized-hhvm-application-deployment
• https://developers.clever-cloud.com/doc/applications/docker/#sample-dockerized-applications

We should have a L2 section "Samples and tutorials", put the list of sample applications there, and link to proper guides for the first two sections that don't belong there.

It will unclutter the Docker page.

[judu]

(Don't hesitate to assign me or @Dekabry on that)

[PLhuillery]

Hi @judu !

I'll take it.
We have examples on GIthub and on the Doc. They are quite different.

Which one should we keep ? I feel the ones posted on Github are more explicit.
Can i have your feedback so I know which one I'll keep ?

Thanks ! :)

[PLhuillery]

The dockerized Rust example has been tested and works correctly.
However, the HHVM example can't deploy, and encounters 403 & 404 errors when attempting to dl HHVM files and other ones.

I am thinking of removing the HHVM example for now.

[PLhuillery]

I did fix the HHVM example, but it's on a different repo.
I'm removing HHVM example for now, until the example gets fixed once i push the PR on the other repo.