feat(#1235): add an optimizer switch flag to migration context #791

	name: CI

	on: [pull_request]

	jobs:
	build:

	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v2

	- name: Set up Go
	uses: actions/setup-go@v1
	with:
	go-version: 1.17

	- name: Build
	run: script/cibuild

	- name: Upload gh-ost binary artifact
	uses: actions/upload-artifact@v1
	with:
	name: gh-ost
	path: bin/gh-ost

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