fix(env): treat empty numeric env vars as unset #123

	name: Lint and Testing

	on:
	push:
	pull_request:

	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v7

	- name: Setup go
	uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	check-latest: true

	- name: Setup golangci-lint
	uses: golangci/golangci-lint-action@v9
	with:
	version: v2.12
	args: --verbose

	- uses: hadolint/hadolint-action@v3.4.0
	name: hadolint for Dockerfile
	with:
	dockerfile: docker/Dockerfile

	test:
	strategy:
	matrix:
	os: [ubuntu-latest]
	go: [1.25, 1.26]
	include:
	- os: ubuntu-latest
	go-build: ~/.cache/go-build
	name: ${{ matrix.os }} @ Go ${{ matrix.go }}
	runs-on: ${{ matrix.os }}
	env:
	GO111MODULE: on
	GOPROXY: https://proxy.golang.org
	steps:
	- name: Set up Go ${{ matrix.go }}
	uses: actions/setup-go@v7
	with:
	go-version: ${{ matrix.go }}
	check-latest: true

	- name: Checkout Code
	uses: actions/checkout@v7
	with:
	ref: ${{ github.ref }}

	- uses: actions/cache@v6
	with:
	path: \|
	${{ matrix.go-build }}
	~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-
	- name: Run Tests
	run: \|
	make test
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v7
	with:
	flags: ${{ matrix.os }},go-${{ matrix.go }}

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