GitHub Action to update image tag in target Helm values.yaml

This GitHub Action checks out target repo, updates image tag in specified target file and pushes the changes.

You can add this action to your GitHub workflow for Ubuntu runners (e.g. runs-on: ubuntu-latest) as follows:

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      DEPLOY_GITOPS_REPO: 'lwitkowski/playground-gitops'
      DEPLOY_TOKEN: ${{ secrets.DEPLOY_TOKEN }}

    steps:
      - name: Deploy to test
        uses: lwitkowski/gitops-deploy-tag-action@master
        with:
          target-file: 'sample-service/test/values.yaml'

      - name: Deploy to production
        uses: lwitkowski/gitops-deploy-tag-action@master
        with:
          target-file: 'sample-service/prod/values.yaml'

TODO: how to setup DEPLOY_TOKEN secret? machine user token with repo write permissions

Configuration

The action can be configured by the following options.

Option	Default Value	Description
gitops-repo	${DEPLOY_GITOPS_REPO}	Owner and name of target gitops repository name where yaml file is stored.
target-file	mandatory	Path to yaml file inside gitops repo to be updated.
docker-image-tag	${GITHUB_SHA::6}	Docker image tag to be set in target yaml file.
env.DEPLOY_TOKEN	mandatory	Github access token with write permission to gitops repo. Should be set as env variable in calling workflow.

Note: Running this action on pull_request_target events is dangerous if combined with code checkout and code execution.