Github Actions - Invalid workflow file - github

Question

I am trying to build CI/CD pipelines using GitHub Actions but unfortunately, I am stuck with an error with the yaml file.
Here is my Yaml file is:
---
name: Build and push python code to gcp with github actions
on:
push:
branches:
- main
jobs:
build_push_grc:
name: Build and push to gcr
runs_on: unbuntu-latest
env:
IMAGE_NAME: learning_cicd
PROJECT_ID: personal-370316
steps:
- name: Checkoutstep
uses: actions/checkout#v2
- uses: google-github-actions/setup-gcloud#master
with:
service_account_key: ${{ secrets.SERVICE_ACCOUNT_KEY}}
project_id: ${{ env.PROJECT_ID }}
export_default_credentials: true
- name: Build Docker Image
run: docker build -t $IMAGE_NAME:latest .
- name: Configure Docker Client
run: |-
gcloud auth configure-docker --quiet
- name: Push Docker Image to Container Registry (GCR)
env:
GIT_TAG: v0.1.0
run: |-
docker tag $IMAGE_NAME:latest gcr.io/$PROJECT_ID/$IMAGE_NAME:latest
docker tag $IMAGE_NAME:latest gcr.io/$PROJECT_ID/$IMAGE_NAME:$GIT_TAG
docker push gcr.io/$PROJECT_ID/$IMAGE_NAME:latest
docker push gcr.io/$PROJECT_ID/$IMAGE_NAME:$GIT_TAG
Here is an error where I am stuck with:
GitHub Actions
/ .github/workflows/gcp.yaml
Invalid workflow file
You have an error in your yaml syntax on line 15
I tried all possible indentations available on the internet but had no luck. I tried Yamllinter but still could not find where the error comes from. Please point me to where I am going wrong.
Thanks.

Answer 1

The runs-on (not runs_on) should have two spaces indentation relative to the job identifier. Also, the OS should be ubuntu-latest.
Then, env should have the same indentation as runs-on or name, the same as steps.
Here is the correct WF:
---
name: Build and push python code to gcp with github actions
on:
push:
branches:
- main
jobs:
build_push_grc:
name: Build and push to gcr
runs-on: ubuntu-latest
env:
IMAGE_NAME: learning_cicd
PROJECT_ID: personal-370316
steps:
- name: Checkoutstep
uses: actions/checkout#v2
- uses: google-github-actions/setup-gcloud#master
with:
service_account_key: ${{ secrets.SERVICE_ACCOUNT_KEY}}
project_id: ${{ env.PROJECT_ID }}
export_default_credentials: true
- name: Build Docker Image
run: docker build -t $IMAGE_NAME:latest .
- name: Configure Docker Client
run: |-
gcloud auth configure-docker --quiet
- name: Push Docker Image to Container Registry (GCR)
env:
GIT_TAG: v0.1.0
run: |-
docker tag $IMAGE_NAME:latest gcr.io/$PROJECT_ID/$IMAGE_NAME:latest
docker tag $IMAGE_NAME:latest gcr.io/$PROJECT_ID/$IMAGE_NAME:$GIT_TAG
docker push gcr.io/$PROJECT_ID/$IMAGE_NAME:latest
docker push gcr.io/$PROJECT_ID/$IMAGE_NAME:$GIT_TAG
I would recommend debugging such issues in the GitHub file edit form (editing the yml file in the .github/workflows directory). It will highlight all the issues regarding the workflow syntax. Demo.