How to deploy Lambda->AWS using Github Action?

Hello everybody, Internet is large but I really could not find an answer.

I am developing AWS Lambda (NET6) and now I am trying to create a Github Action to build and deploy my function to AWS. Manually I do it but now want to automate.

Here is my yml file

name: .NET->AWS on: push: branches: [ main ] pull_request: branches: [ main ] workflow_dispatch:

jobs: build:

runs-on: ubuntu-latest
env:
  AWS_ACCESS_KEY_ID: ${{ secrets.ACCESS_KEY_ID }}
  AWS_SECRET_ACCESS_KEY: ${{ secrets.SECRET_ACCESS_KEY }}
  AWS_REGION: eu-west-2
steps:
- uses: actions/checkout@v3
- name: Setup .NET
  uses: actions/setup-dotnet@v3
- name: AWS CLI
  run: dotnet tool install -g Amazon.Lambda.Tools
- name: Build
  run: dotnet build -c release
- name: Deploy to Lambda
  run: dotnet lambda deploy-serverless

The project was built ok. The result of the Action is:

Deploy to Lambda

Run dotnet lambda deploy-serverless dotnet lambda deploy-serverless shell: /usr/bin/bash -e {0} env: AWS_ACCESS_KEY_ID: *** AWS_SECRET_ACCESS_KEY: *** AWS_REGION: eu-west-2 Amazon Lambda Tools for .NET Core applications (5.7.2) Project Home: https://github.com/aws/aws-extensions-for-dotnet-cli, https://github.com/aws/aws-lambda-dotnet Enter CloudFormation Stack Name: (CloudFormation stack name for an AWS Serverless application) Enter CloudFormation Template: (Path to the CloudFormation template) Enter S3 Bucket: (S3 bucket to upload the build output) Warning: Unable to determine region for bucket , assuming bucket is in correct region: BucketName is a required property and must be set before making this call. (Parameter 'GetBucketLocationRequest.BucketName') Unknown error executing command: Value cannot be null. (Parameter 'path2') at System.IO.Path.Combine(String path1, String path2) at Amazon.Lambda.Tools.Commands.DeployServerlessCommand.PerformActionAsync() in C:\build\src\Amazon.Lambda.Tools\Commands\DeployServerlessCommand.cs:line 145 at Amazon.Common.DotNetCli.Tools.Commands.BaseCommand`1.ExecuteAsync() in C:\build\src\Amazon.Common.DotNetCli.Tools\Commands\BaseCommand.cs:line 49 Error: Process completed with exit code 255.

What can be the reason?