fix: add proper diffutils to container #8

	---
	name: Docker Workflow
	on:
	push:
	branches: [master]
	paths:
	- 'docker/**'
	- requirements.txt

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

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

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Log into registry ${{ env.REGISTRY }}
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@v5
	with:
	flavor: latest=true
	tags: \|
	type=ref,event=branch
	type=sha
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	- name: Setup context
	run: make -C docker setup

	- name: Build and push Docker image
	uses: docker/build-push-action@v5
	with:
	platforms: linux/amd64
	context: docker
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=gha
	cache-to: type=gha,mode=max

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