Add Amazon ECS / Azure App Service deployment guides

[swinton]

Why:

Building on #2085, adds deployment guides for Amazon ECS / Azure App Service as part of a group of select partner deployment guides.

/cc @runleonarun, @imjohnbo, @jpadams 👋

What's being changed:

• Adds a new "deployment guide" for Amazon ECS and Azure App Service based on the existing starter workflows:
  • https://github.com/actions/starter-workflows/blob/master/ci/aws.yml.
  • https://github.com/actions/starter-workflows/blob/master/ci/azure.yml.

Check off the following:

• All of the tests are passing.
• I have reviewed my changes in staging. (look for the deploy-to-heroku link in your pull request, then click View deployment)
• For content changes, I have reviewed the localization checklist
• For content changes, I have reviewed the Content style guide for GitHub Docs.

[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[imjohnbo]

@swinton, I think you might also need to add links to these guides in this list

[jpadams]

@swinton I don't see the Guides linked in the preview enviro deploy like I do in the one @imjohnbo deployed.

#2085 (comment)

[swinton]

@swinton, I think you might also need to add links to these guides in this list

@swinton I don't see the Guides linked in the preview enviro deploy like I do in the one @imjohnbo deployed.

Thanks both. I think we should close this PR and I'll add my commits to @imjohnbo's PR directly, so we don't have any merge conflicts in that file. That 🆒 with you, @imjohnbo?

[swinton]

Should be there now:

[swinton]

I'll add my commits to @imjohnbo's PR directly, so we don't have any merge conflicts in that file. That 🆒 with you, @imjohnbo?

Continuing this work under a single PR: #2085

See you there 👋