Add Dockerfile, compose.yaml, and an unbound example config #40

	name: Build and release
	on:
	# Runs automatically when a tag beginning with 'v' (i.e. a versioned release) is pushed.
	push:
	tags:
	- v*
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	build-release:
	runs-on: ubuntu-20.04
	permissions:
	contents: read
	steps:
	- uses: actions/setup-go@v4
	with:
	go-version: '1.21.4'

	- uses: actions/checkout@v4
	with:
	persist-credentials: false

	- name: build binary
	run: go build

	- name: install nfpm
	run: go install github.com/goreleaser/nfpm/v2/cmd/nfpm@v2.15.1

	- name: build deb
	run: nfpm package -p deb -t unbound_exporter.deb

	- name: upload deb
	uses: actions/upload-artifact@v3
	with:
	name: unbound_exporter deb artifact
	path: unbound_exporter.deb

	push-release:
	if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
	needs: build-release
	runs-on: ubuntu-20.04
	# Overrides the org default of 'read'. This allows us to upload and post the
	# resulting package file as part of a release.
	permissions:
	contents: write
	steps:
	- uses: actions/checkout@v2
	with:
	persist-credentials: false

	- name: Download release artifact
	uses: actions/download-artifact@v3
	with:
	name: unbound_exporter deb artifact

	- name: rename
	run: mv unbound_exporter.deb unbound_exporter-${GITHUB_REF_NAME}.x86_64.deb

	- name: push release
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	# https://cli.github.com/manual/gh_release_create
	run: gh release create "${GITHUB_REF_NAME}" unbound_exporter-${GITHUB_REF_NAME}.x86_64.deb

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