Show help when no subcommand was provided #151

	name: Infrastructure
	defaults:
	run:
	shell: bash
	working-directory: infrastructure

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	permissions:
	id-token: write
	contents: read
	pull-requests: write

	jobs:
	infrastructure:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: hashicorp/setup-terraform@v3

	- name: Run docker-compose
	uses: hoverkraft-tech/compose-action@v2.0.1
	with:
	compose-file: "infrastructure/lambdas/tests/docker-compose.yml"

	- name: Build & Test lambda
	env:
	AWS_DEFAULT_REGION: eu-central-1
	AWS_ACCESS_KEY_ID: 223344
	AWS_SECRET_ACCESS_KEY: wJalrXUtTHISI/DYNAMODB/bPxRfiCYEXAMPLEKEY
	run: \|
	pip3 install cargo-lambda
	rustup update stable && rustup default stable
	cargo lambda build --release
	cargo test --verbose
	working-directory: infrastructure/lambdas

	- name: Configure AWS credentials
	uses: aws-actions/configure-aws-credentials@v4
	with:
	role-to-assume: ${{ secrets.AWS_OIDC_ASSUME_ROLE_ARN }}
	aws-region: eu-central-1
	role-session-name: GitHub-OIDC-TF

	- name: Terraform Init
	id: init
	env:
	AWS_BUCKET_NAME: ${{ secrets.AWS_STATE_BUCKET_NAME }}
	run: terraform init --backend-config="bucket=${AWS_BUCKET_NAME}"

	- name: Terraform Validation
	id: validate
	run: terraform validate

	- name: Terraform Plan
	id: plan
	if: github.event_name == 'pull_request'
	run: terraform plan

	- name: Terraform Apply
	id: apply
	if: github.ref == 'refs/head/main' && github.event_name == 'push'
	run: terraform apply -auto-approve

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