fix: normalize environment variable names in Docker workflow #5

	name: Docker Build and Trivy Scan

	on:
	push:
	branches:
	- '**'

	jobs:
	build-and-scan:
	runs-on: ubuntu-latest
	env:
	DOCKER_PATH_CONTEXT: .
	DOCKER_BUILD_DOCKERFILE: Dockerfile
	DOCKER_LOAD_BOOL: true
	DOCKER_TAGS: sample-python-app:${{ github.sha }}
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	- name: Build Docker Image
	id: build-image
	uses: docker/build-push-action@v6
	with:
	context: ${{ env.DOCKER_PATH_CONTEXT }}
	file: ${{ env.DOCKER_BUILD_DOCKERFILE }}
	load: ${{ env.DOCKER_LOAD_BOOL }}
	tags: ${{ env.DOCKER_TAGS }}
	- name: Run Trivy vulnerability scanner
	uses: aquasecurity/trivy-action@0.33.1
	with:
	image-ref: ${{ env.DOCKER_TAGS }}
	format: 'table'
	exit-code: '1'
	ignore-unfixed: true
	vuln-type: 'os,library'
	severity: 'CRITICAL,HIGH'

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