lint

Add unique constraint support #237

	name: lint
	on:
	push:
	branches:
	- main
	pull_request:
	permissions:
	contents: read
	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Build Docker image
	run: docker build -t pg-schema-diff-lint-runner -f ./build/Dockerfile.lint .
	- name: Run lint
	run: docker run pg-schema-diff-lint-runner
	# The "lint" job will lint go (and SQL). The "go_lint" job will also lint go but adds comments to the PR on the lines
	# containing the linting errors
	go_lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/setup-go@v4
	with:
	go-version: '1.18'
	cache: false
	- uses: actions/checkout@v3
	- name: golangci-lint
	uses: golangci/golangci-lint-action@v3
	with:
	version: v1.52.2

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