feat(Zig): add primes/Simple #27

	name: Publish Docker image

	on:
	push:
	paths:
	- Dockerfile
	branches:
	- master

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

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

	- name: Cache Docker layers
	uses: actions/cache@v4
	with:
	path: /tmp/.buildx-cache
	key: ${{ runner.os }}-buildx-${{ hashFiles('Dockerfile') }}
	restore-keys: \|
	${{ runner.os }}-buildx-

	- name: Login to DockerHub
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push
	uses: docker/build-push-action@v6
	with:
	push: true
	pull: true
	tags: ghcr.io/${{ github.repository }}:latest

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