Moving fully to GH actions. (#1288)

Signed-off-by: bwplotka <bwplotka@gmail.com>

.circleci/config.yml

@@ -1,63 +0,0 @@
-version: 2.1
-orbs:
-  go: circleci/go@1.7.1
-  prometheus: prometheus/prometheus@0.16.0
-jobs:
-  test:
-    parameters:
-      go_version:
-        type: string
-      run_style_and_unused:
-        type: boolean
-        default: false
-      run_lint:
-        type: boolean
-        default: false
-      use_gomod_cache:
-        type: boolean
-        default: true
-    docker:
-      - image: cimg/go:<< parameters.go_version >>
-    steps:
-      - checkout
-      - when:
-          condition: << parameters.use_gomod_cache >>
-          steps:
-            - go/load-cache:
-                key: v1-go<< parameters.go_version >>
-      - run: make check_license test
-      - when:
-          condition: << parameters.run_lint >>
-          steps:
-            - run: make lint
-      - when:
-          condition: << parameters.run_style_and_unused >>
-          steps:
-            - run: make style unused
-      - when:
-          condition: << parameters.use_gomod_cache >>
-          steps:
-            - go/save-cache:
-                key: v1-go<< parameters.go_version >>
-      - store_test_results:
-          path: test-results
-workflows:
-  version: 2
-  client_golang:
-    jobs:
-      # Refer to README.md for the currently supported versions.
-      - test:
-          name: go-1-18
-          go_version: "1.18"
-          run_lint: true
-      - test:
-          name: go-1-19
-          go_version: "1.19"
-          run_lint: true
-      - test:
-          name: go-1-20
-          go_version: "1.20"
-          run_lint: true
-          # Style and unused/missing packages are only checked against
-          # the latest supported Go version.
-          run_style_and_unused: true

.github/workflows/go.yml

@@ -1,15 +1,15 @@
-name: Test and Lint
-
+---
+name: Go
 on:
+  pull_request:
   push:
     branches:
       - main
-  pull_request:
-    branches:
-      - main
+      - 'release-*'
 
 jobs:
   test:
+    name: Tests
     runs-on: ubuntu-latest
 
     strategy:

README.md

@@ -1,7 +1,7 @@
 # Prometheus Go client library
 
-[![CircleCI](https://circleci.com/gh/prometheus/client_golang/tree/main.svg?style=svg)](https://circleci.com/gh/prometheus/client_golang/tree/main)
-[![Go Report Card](https://goreportcard.com/badge/github.com/prometheus/client_golang)](https://goreportcard.com/report/github.com/prometheus/client_golang)
+[![CI](https://github.com/prometheus/client_golang/actions/workflows/ci.yml/badge.svg)](https://github.com/prometheus/client_golang/actions/workflows/ci.yml)
+[[![Go Report Card](https://goreportcard.com/badge/github.com/prometheus/client_golang)](https://goreportcard.com/report/github.com/prometheus/client_golang)
 [![Go Reference](https://pkg.go.dev/badge/github.com/prometheus/client_golang.svg)](https://pkg.go.dev/github.com/prometheus/client_golang)
 [![Slack](https://img.shields.io/badge/join%20slack-%23prometheus--client_golang-brightgreen.svg)](https://slack.cncf.io/)