doc: Enhance Docker platform specification in documentation #153

	name: Docker

	on:
	# Trigger on file change
	push:
	paths:
	- 'Dockerfile'
	branches:
	- master
	- docker-arm
	pull_request:
	# paths:
	# - 'Dockerfile'
	# Trigger build manually
	workflow_dispatch:
	# Trigger build on a schedule
	schedule:
	# every fist day of the month
	- cron: '0 0 1 * *'

	jobs:
	docker:
	runs-on: ubuntu-latest
	if: github.repository_owner == 'SynoCommunity'
	steps:
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3

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

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

	- name: Build and push
	uses: docker/build-push-action@v5
	# if: ${{ github.event_name != 'pull_request' }}
	with:
	push: true
	pull: true
	platforms: "linux/amd64,linux/arm64"
	tags: ghcr.io/synocommunity/spksrc:latest

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