087

Build a Docker Image and Publish It to GCP GCR & Artifact Registry using Github Actions

YouTube Tutorial

Content

• Create GitHub Repository
• Create Flask App
• Create Docker Image for Flask App
• Create Service Account in GCP
• Create GitHub Actions Docker Build and Push Workflow
• Use GitHub Actions to Push Docker to Artifact Registry
• Increment Git Tag for Each Commit and Use It for Docker Image

Create GitHub Repository

• Go to GitHub
• Create empty repository lesson-087, keep it public
• Clone repository

git clone git@github.com:antonputra/lesson-087.git

Create Flask App

• Create app.py
• Create requirements.txt
• Optionally, create .gitignore

Create Docker Image for Flask App

• Create Dockerfile
• Build docker image

docker build -t lesson-087:latest .

• Run docker locally

docker run -p 5000:5000 lesson-087:latest

• Use curl to test

curl localhost:5000/hello

Create Service Account in GCP

• Create github-actions service account
• Create and download key for service account
• Add Storage Admin role to the service account, project wide permissions (fix later)

Create GitHub Actions Docker Build and Push Workflow

• Create .github/workflows/gcp.yml
• Create GitHub secret SERVICE_ACCOUNT_KEY
• Commit and push

git add .
git commit -m 'init commit'
git push origin main

• Check docker image in GCR
• Fix permissions, remove wide project permissions and add to GS bucket
• Create empty commit to test CI

git commit --allow-empty -m "Trigger CI"
git push origin main

Use GitHub Actions to Push Docker to Artifact Registry

• Create images Artifact Registry repository
• Add github-actions service account to images repo with Artifact Registry Writer role
• Add gcloud auth configure-docker us-west2-docker.pkg.dev --quiet to Configure Docker Client step
• Add Push Docker Image to Artifact Registry step
• Commit and push

git add .
git commit -m 'add step to push docker to artifact registry'
git push origin main

Increment Git Tag for Each Commit and Use It for Docker Image

• Create scripts/git_update.sh
• Add Automatic Tagging of Releases step
• Update GIT_TAG variable to ${{ steps.increment-git-tag.outputs.git-tag }}
• Commit and test

git add .
git commit -m 'add step to increment git tag'
git push origin main

• Check GitHub Tag, GCR and Artifact registry

Links

• Push to GCR GitHub Action
• Uploading a Docker image to GCR using Github Actions
• Using Github Actions to Build and Push Images to Google Container Registry
• Creating a CI/CD environment for serverless containers on Cloud Run with GitHub Actions
• Granting permissions

Clean Up

• Delete github-actions service account
• Delete lesson-087 GCR repository
• Delete artifacts.devopsbyexample-325402.appspot.com GS bucket
• Delete images artifact repository