update-mod-monthly.yaml

# =============================================================================
#  Weekly Module Update
# =============================================================================
# This workflow runs monthly to:
#   1. Update the `go.mod` and `go.sum` files if all the tests succeeds to run
#      in all Go versions with that updated versions. (Go v1.15~latest)
#   2. Test `go get -u` and `go install` functionality of the latest release.
#   3. Pull request the updated `go.mod` and `go.sum`
#
# NOTE:
# You need to set the "PERSONAL_ACCESS_TOKEN" env variable in the repository
# secreat of your repo at:
#     [Settings]-[Secrets]-[Actions secrets]
# To generate a new token go to:
#     https://github.com/settings/tokens
#     * You need add the "repo" scope to the token but no more.
# =============================================================================
name: Monthly Update

on:
  workflow_dispatch:
  schedule:
    # Runs At 19:00 UTC (AM 04:00 JST) on day-of-month 1
    - cron: "0 19 1 * *"

jobs:
  automated_build:
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Check current install functionality
        run: |
          set -eu
          : # Check go install functionality
          docker-compose --file ./.github/docker-compose.yml run gogetu
          docker-compose --file ./.github/docker-compose.yml run goinstall
          : # Check brew functionality
          docker-compose --file ./.github/docker-compose.yml run linuxbrew

      - name: Update go.mod and run tests
        run: |
          set -eu
          : # Update go.mod and go.sum
          docker-compose --file ./.github/docker-compose.yml run tidy
          : # Check module version compatibility
          docker-compose --file ./.github/docker-compose.yml run v1_15
          docker-compose --file ./.github/docker-compose.yml run v1_16
          docker-compose --file ./.github/docker-compose.yml run v1_17
          docker-compose --file ./.github/docker-compose.yml run latest

      - name: Create Pull Request on Change
        id: cpr
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
      - name: Bump-up patch version
        if: steps.cpr.outputs.pull-request-operation == 'created'
        uses: kyoh86/git-vertag-action@v1
        id: vertag
        with:
          method: patch
      - name: Push tag
        if: steps.cpr.outputs.pull-request-operation == 'created'
        run: |
          echo 'Bump-up to:' ${{ steps.vertag.outputs.vertag }}
          git push --tags