Updated workflow file main.yml and Makefile to handle building arm64 images #573

	---
	name: Docker PostGIS CI

	on:
	push:
	pull_request:
	schedule:
	- cron: "15 5 * * 1"

	defaults:
	run:
	shell: bash

	jobs:
	make-docker-images:
	strategy:
	matrix:
	postgres: [12, 13, 14, 15, 16, 17]
	postgis: ["3.5"]
	variant: [default, alpine]
	arch: ["linux/amd64", "linux/arm64"]
	include:
	- postgres: 16
	postgis: master
	variant: default
	- postgres: 17
	postgis: master
	variant: default

	name: >-
	Build docker image for
	${{ matrix.arch }}-${{ matrix.postgres }}-${{ matrix.postgis }}
	variant ${{ matrix.variant }}
	runs-on: ubuntu-20.04
	continue-on-error: ${{ matrix.postgis == 'master' }}
	env:
	VERSION: ${{ matrix.postgres }}-${{ matrix.postgis }}
	ARCH: ${{ matrix.arch }}
	VARIANT: ${{ matrix.variant }}

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

	- name: >-
	Build docker image for
	${{ env.ARCH }}
	${{ env.VERSION }}
	${{ env.VARIANT }}
	run: make test

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3

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

	- name: Login to dockerhub
	uses: docker/login-action@v3
	if: >-
	${{
	(github.ref == 'refs/heads/master') &&
	(github.event_name != 'pull_request')
	}}
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_ACCESS_TOKEN }}

	- name: Push docker image to dockerhub
	if: >-
	${{
	(github.ref == 'refs/heads/master') &&
	(github.event_name != 'pull_request')
	}}
	env:
	DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
	DOCKERHUB_ACCESS_TOKEN: ${{ secrets.DOCKERHUB_ACCESS_TOKEN }}
	run: make push

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