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Integrate Dagger with GitHub Actions

caution

This is documentation for Dagger 0.1, which is no longer actively maintained.

For up-to-date documentation, see the latest version (0.2).

This tutorial illustrates how to use GitHub Actions and Dagger to build, push and deploy Docker images to Cloud Run.

Prerequisites

We assume that you've finished our 106-cloudrun tutorial as this one continues right after.

Setup new GitHub repo

Push existing examples/todoapp directory to your new GitHub repo (public or private). It should contain all the code from https://github.com/dagger/examples/tree/main/todoapp, gcpcloudrun and .dagger/env/gcpcloudrun/ directory.

Add GitHub Actions Secret

Dagger encrypts all input secrets using your key stored at ~/.config/dagger/keys.txt. Copy the entire line starting with AGE-SECRET-KEY- and save it to a GitHub secret named DAGGER_AGE_KEY. In case you don't know how to create secrets on GitHub take a look at this tutorial.

Create a GitHub Actions Workflow

Create .github/workflows/gcpcloudrun.yml file and paste the following code into it:

.github/workflows/gcpcloudrun.yml
name: CloudRun

on:
push:
branches:
- main

jobs:
deploy:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v2
- name: Dagger
uses: dagger/dagger-for-github@v3
with:
age-key: ${{ secrets.DAGGER_AGE_KEY }}
args: up -e gcpcloudrun

Run

On any push to main branch this workflow should run and deploy the todoapp to your GCP Cloud Run instance.