GitHub Action for Google App Engine (deliverables) - google-app-engine

Question

I am trying to set up a GitHub action to automatically deploy to Google App Engine when I push to the master branch. However, I am quite new in the pipelines. I tried to do my homework and I ended up stuck with this.
First, this is my .github/workflows/main.yml:
name: Deployment
on:
push:
branches:
- master
jobs:
deploy:
name: Deploy to App Engine
runs-on: ubuntu-latest
steps:
- name: Google App Engine
uses: google-github-actions/deploy-appengine#v0.4.0
with:
project_id: my-gae-project-id
version: master
credentials: ${{secrets.GOOGLE_APP_ENGINE_KEY}}
flags: --no-cache
deliverables: app.yaml
Now I tried to create the app.yaml in the root directory and also in the .github/workflows directory. None of them works. For now, my app.yaml is just:
runtime: php74
env: standard
Here is the outcome of my GH action everytime:
I tried to do some research and found recommendation to put the app.yaml in a folder, so I also tried .github/workflows/gae/app.yaml and then set it as deliverables: gae/app.yaml - no success. Also tried to put the path in quotes like deliverables: "gae/app.yaml" - no success. Also tried to put the app.yaml to the root and set it as deliverables: ../../app.yaml. In some cases, the app.yaml creates a new GitHub action which is even more irritating.
Now I'm just getting frustrated, because I know this is going to be something silly, but I didn't find many resources about this specific case.

Answer 1

There is a missing step in your main.yml that's why your workflow can't find and access the files. To fix it, add checkout#v2 action in your steps:
name: Deployment
on:
push:
branches:
- master
jobs:
deploy:
name: Deploy to App Engine
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout#v2
- name: Google App Engine
uses: google-github-actions/deploy-appengine#v0.4.0
with:
project_id: my-gae-project-id
version: master
credentials: ${{secrets.GOOGLE_APP_ENGINE_KEY}}
flags: --no-cache
deliverables: app.yaml
You can also visit this official github example for your reference.