Building for all platforms in `.promu.yml` #10

	name: "Promu Build : Crossbuild"
	run-name: Building for all platforms in `.promu.yml`
	on:
	push:
	branches:
	- main
	jobs:
	crossbuild:
	runs-on: ubuntu-latest
	steps:
	- name: Check out
	uses: actions/checkout@v3
	- name: Get Promu release
	run: wget https://github.com/prometheus/promu/releases/download/v0.13.0/promu-0.13.0.linux-amd64.tar.gz
	- name: Untar release
	run: tar -xvf promu-0.13.0.linux-amd64.tar.gz
	- name: Move binary to root
	run: mv promu-0.13.0.linux-amd64/promu ./promu
	- name: set permissions
	run: chmod +x promu
	- name: Build for architectures listed in .promu.yml
	run: ./promu -v crossbuild
	- name: Create tarballs for each build
	run: ./promu -v crossbuild tarballs
	- name: Create a new Github release and attach tarballs
	run: ./promu -v release .tarballs
	env:
	GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

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