This is a Github Action used to merge changes from remote.

This is forked from mheene, with me adding authentication using GitHub Token and downstream branch options due to the default branch naming changes.

• Perserve a repo while keeping up-to-date (rather than to clone it).
• Have a branch in sync with upstream, and pull changes into dev branch.

Example github action here:

name: My_Pipeline_Name

### 
env:
  # Required, URL to upstream (fork base)
  UPSTREAM_URL: "https://github.com/dabreadman/go-web-proxy.git"
  # Optional, defaults to main
  DOWNSTREAM_BRANCH: "main"
### 

on:
  schedule:
    - cron: '30 * * * *'

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: GitHub Sync to Upstream Repository
        uses: dabreadman/[email protected]
        with: 
          upstream_repo: ${{ env.UPSTREAM_URL }}
          branch: $$ env.DOWNSTREAM_BRANCH }}
          token: ${{ secrets.GITHUB_TOKEN}}

This action syncs your repo (merge changes from remote) at branch main with the upstream repo https://github.com/dabreadman/go-web-proxy.git every 30 minutes.

1. Setup an environment using docker. (Why do that when Workflow is inside an environment? I have no idea).
2. Pass arguments into entrypoint.sh.
3. entrypoint.sh does the heavy lifting.
   git clone, set origin/upstream, fetch, merge, push.