build tarball using ustar format for better compatibility #214

	name: linux
	on:
	push:
	branches:
	- '*'
	tags-ignore:
	- '*'
	pull_request:
	jobs:
	perl:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	codename:
	- buster
	perl-version:
	- '5.16'
	- '5.18'
	- '5.20'
	- '5.22'
	- '5.30'
	container:
	image: perl:${{ matrix.perl-version }}-${{ matrix.codename }}
	services:
	postgres:
	image: postgres
	env:
	POSTGRES_PASSWORD: postgres
	POSTGRES_INITDB_ARGS: --auth-host=md5
	steps:
	- uses: actions/checkout@v2
	- name: upgrade libpq
	run: \|
	curl https://salsa.debian.org/postgresql/postgresql-common/raw/master/pgdg/apt.postgresql.org.sh \| bash
	apt-get -y update && apt-get -y upgrade
	- name: perl -V
	run: perl -V
	- name: Fix ExtUtils::MakeMaker (for Perl 5.16 and 5.18)
	run: cpanm -n App::cpanminus ExtUtils::MakeMaker
	- name: Install dependencies
	run: \|
	cpanm -n --installdeps .
	cpanm -n Mojo::Pg
	- name: Run tests
	env:
	TEST_ONLINE: postgresql://postgres:postgres@postgres:5432/postgres
	run: prove -l t

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