Update docker/build-push-action action to v6 #56

	---
	name: Lint & Test

	# Run for all pushes to main and pull requests when Go or YAML files change
	on:
	push:
	branches:
	- main
	pull_request:
	workflow_dispatch:

	jobs:
	lint:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Run check
	run: FC_OUT=/tmp/krakend.yml make check

	build-image:
	name: build-image
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Verify krakend configuration
	run: FC_OUT=/tmp/krakend.yml make check

	- name: docker-metadata
	id: docker-metadata
	uses: docker/metadata-action@v4
	with:
	images: ghcr.io/${{ github.repository_owner }}/api-gateway
	tags: \|
	type=sha

	- name: Build
	uses: docker/build-push-action@v6
	with:
	context: .
	file: ./Dockerfile
	push: false
	load: true
	tags: ${{ steps.docker-metadata.outputs.tags }}

	- name: Run Trivy vulnerability scanner
	uses: aquasecurity/trivy-action@master
	with:
	image-ref: ${{ steps.docker-metadata.outputs.tags }}
	security-checks: 'vuln,config,secret'
	ignore-unfixed: true
	severity: 'HIGH,CRITICAL'
	format: 'table'

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