fix: env is not accessible from matrix #4

	name: Build Container Images

	on:
	push:
	branches:
	- master
	- build-container # This branch is used to test the container build workflow.
	tags:
	- v*

	jobs:
	build-and-push:
	name: Build and Push
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write
	strategy:
	fail-fast: true
	matrix:
	include:
	- container-name: php
	base-tag: 7.4-4.33.4
	- container-name: nginx
	base-tag: 1.25-5.34.2

	env:
	REGISTRY: ghcr.io
	CONTAINER_NAME: ${{ github.repository }}/${{ matrix.container-name }}
	BASE_CONTAINER_TAG: ${{ matrix.base-tag }}

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v2

	- name: Setup Buildx
	uses: docker/setup-buildx-action@v2

	- name: Log into registry
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract container metadata
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: "${{ env.REGISTRY }}/${{ env.CONTAINER_NAME }}"

	- name: Build and push Docker image
	id: build-and-push
	uses: docker/build-push-action@v4
	with:
	context: .
	file: ./containers/${{ matrix.container-name }}/Dockerfile
	build-args: \|
	BASE_TAG=${{ env.BASE_CONTAINER_TAG }}
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	platforms: linux/amd64,linux/arm64
	cache-from: type=gha
	cache-to: type=gha,mode=max

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