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GitHub Action to render file based on template and passed variables

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Render Template

main release

GitHub Action to render file based on template and passed variables.

Inputs

Name Description Required
template Path to template true
vars Variables to use in template (in YAML format) false
vars_path Path to YAML file with variables false
result_path Desired path to result file false

You must set at least vars or vars_path.
You may set both of them (vars values will precede over vars_path).

Outputs

Name Description
result Rendered file content

Example

kube.template.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .deployment }}
  labels:
    app: {{ .app }}
spec:
  replicas: 3
  selector:
    matchLabels:
      app: {{ .app }}
  template:
    metadata:
      labels:
        app: {{ .app }}
    spec:
      containers:
      - name: {{ .app }}
        image: {{ .image }}
        ports:
        - containerPort: 80

.github/workflows/main.yml

name: main
on:
  push:
    branches:
      - main
env:
  DOCKER_IMAGE: username/image
  DEPLOYMENT_NAME: nginx-deployment
jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      <...>

      - name: Render template
        id: render_template
        uses: chuhlomin/[email protected]
        with:
          template: kube.template.yml
          vars: |
            image: ${{ env.DOCKER_IMAGE }}:${{ github.sha }}
            deployment: ${{ env.DEPLOYMENT_NAME }}
            app: nginx

      - name: Deploy
        timeout-minutes: 4
        run: |-
          echo '${{ steps.render_template.outputs.result }}' | kubectl apply -f -
          kubectl rollout status deployment/$DEPLOYMENT_NAME

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GitHub Action to render file based on template and passed variables

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