freshen base image and keep up with gem bundler changes #6

	name: Build Multi-Arch Docker Image

	on:
	push:
	branches:
	- "7.17"
	pull_request:
	branches: []

	# permissions are needed if pushing to ghcr.io
	# permissions:
	# packages: write

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:

	# Get the repository's code
	- name: Checkout
	uses: actions/checkout@v3

	# https://github.com/docker/setup-qemu-action
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v1

	# https://github.com/docker/setup-buildx-action
	- name: Set up Docker Buildx
	id: buildx
	uses: docker/setup-buildx-action@v1

	# - name: Login to GHCR
	# if: github.event_name != 'pull_request'
	# uses: docker/login-action@v1
	# with:
	# registry: ghcr.io
	# username: ${{ github.repository_owner }}
	# password: ${{ secrets.GITHUB_TOKEN }}

	# https://github.com/docker/login-action
	- name: Login to Docker Hub
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Container image tag generation
	id: image_tagging # you'll use this in the next step
	uses: docker/metadata-action@v3
	with:
	# list of Docker images to use as base name for tags
	images: \|
	cameronkerrnz/logstash-plugin-dev
	# Docker tags based on the following events/attributes
	tags: \|
	type=ref,event=branch

	- name: Build and push
	uses: docker/build-push-action@v3
	with:
	context: .
	platforms: linux/amd64,linux/arm64
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.image_tagging.outputs.tags }}
	labels: ${{ steps.image_tagging.outputs.labels }}

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