Update dockerfile to use Ubuntu 22.04 as base image (#4252) #1

	name: Validate

	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]

	jobs:
	validate:
	strategy:
	matrix:
	go-version: [1.23.x, 1.24.x]
	os: [ubuntu-20.04]
	runs-on: ${{ matrix.os }}

	steps:
	- name: Install Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}

	- name: Checkout Code
	uses: actions/checkout@v4
	with:
	# Resolves to empty string for push events and falls back to HEAD.
	ref: ${{ github.event.pull_request.head.sha }}

	- name: Validate
	run: \|
	./validate.sh --nofmt --cov --race 10
	env:
	GO111MODULE: "on"

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