Add actions for build/deploy/promote and PR previews, remove k8s infr… #1

	name: Build and stage

	env:
	AZURE_WEBAPP_PACKAGE_PATH: '.'
	DOTNET_VERSION: '8.0'
	SLOT_NAME: staging

	on:
	push:
	branches: [ "main" ]

	permissions:
	contents: read

	jobs:
	build:
	name: Build and publish app
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Set up .NET Core
	uses: actions/setup-dotnet@v4
	with:
	dotnet-version: ${{ env.DOTNET_VERSION }}
	- name: Set up dependency caching for faster builds
	uses: actions/cache@v4
	with:
	path: ~/.nuget/packages
	key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
	restore-keys: \|
	${{ runner.os }}-nuget-
	- name: Build with dotnet
	run: dotnet build src/Client --configuration Release
	- name: dotnet publish
	run: dotnet publish src/Client -c Release -o ${{ env.DOTNET_ROOT }}/mainsite
	- name: Upload artifact for deployment job
	uses: actions/upload-artifact@v4
	with:
	name: Steeltoe-MainSite
	path: ${{ env.DOTNET_ROOT }}/mainsite

	deploy-to-staging:
	name: Deploy to staging environment
	permissions:
	contents: none
	runs-on: ubuntu-latest
	needs: build
	environment:
	name: 'Staging'
	url: ${{ steps.deploy-to-webapp.outputs.webapp-url }}

	steps:
	- name: Download artifact from build job
	uses: actions/download-artifact@v4
	with:
	name: Steeltoe-MainSite

	- name: Log into Azure CLI with service principal
	uses: azure/login@v1
	with:
	creds: ${{ secrets.AZURE_CREDENTIALS }}

	- name: Deploy to Azure Web App
	id: deploy-to-webapp
	uses: azure/webapps-deploy@v3
	with:
	app-name: ${{ vars.AZURE_WEBAPP_NAME }}
	package: ${{ env.AZURE_WEBAPP_PACKAGE_PATH }}
	slot-name: ${{ env.SLOT_NAME }}

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