Add support for net8 Lambda Run Time #61

	name: Validate Nuget Package Docker Build
	on: [pull_request]

	jobs:
	lambda-docker-build-dotnet:
	strategy:
	fail-fast: false
	matrix:
	version: [6, 7, 8]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-dotnet@v3
	with:
	dotnet-version: ${{ matrix.version }}.x
	- run: dotnet tool install -g Amazon.Lambda.Tools
	- name: Build and package nuget
	uses: cake-build/cake-action@v1
	with:
	cake-version: 1.3.0
	- name: Build and package lambda
	working-directory: ./sample/SampleLambda-dotnet${{ matrix.version }}
	run: dotnet lambda package SampleLambda --profile default --region us-west-1
	- name: Run docker
	run: docker run --detach -p 9000:8080 samplelambda-dotnet${{ matrix.version }}:latest
	- name: Test function
	run: \|
	curl -XPOST "http://localhost:9000/2015-03-31/functions/function/invocations" -d '{}' -o /tmp/lambda_result.txt
	if $(grep -q iVB /tmp/lambda_result.txt); then
	echo "SUCCESS: The lambda rendered a PNG"
	exit 0
	else
	echo "FAILURE: The lambda did not return expected png value starting with iVB"
	cat /tmp/lambda_result.txt
	exit 1
	fi
	shell: bash

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