Github action which will start a Google Cloud SQL Proxy as Docker container.

Set up the following resources manually in the Cloud Console or use a tool like Terraform.

• Running Cloud SQL instance with a public IP address
• Create Service Account with Role Cloud SQL Client and export a new JSON key.

uses: mattes/gce-cloudsql-proxy-action@v1
with:
  creds: ${{ secrets.GOOGLE_APPLICATION_CREDENTIALS }}
  instance: my-project:us-central1:instance-1