fix(ci): Skip GCP CI jobs on PRs from external contributors, let mergify test them after approval #194

	# Workflow patches for skipping Google Cloud CD deployments, when Rust code or dependencies aren't
	# modified in a PR.
	name: Deploy Nodes to GCP

	# Run on PRs with unmodified code and dependency files.
	on:
	pull_request:
	paths-ignore:
	# code and tests
	- '*/.rs'
	# hard-coded checkpoints and proptest regressions
	- '*/.txt'
	# dependencies
	- '**/Cargo.toml'
	- '**/Cargo.lock'
	# configuration files
	- '.cargo/config.toml'
	- '**/clippy.toml'
	# workflow definitions
	- 'docker/**'
	- '.dockerignore'
	- '.github/workflows/cd-deploy-nodes-gcp.yml'
	- '.github/workflows/sub-build-docker-image.yml'

	# IMPORTANT
	#
	# These job names must be kept in sync with the `.patch-external.yml` and `.yml` files.
	jobs:
	# We don't patch the testnet job, because testnet isn't required to merge (it's too unstable)
	build:
	name: Build CD Docker / Build images
	runs-on: ubuntu-latest
	steps:
	- run: 'echo "No build required"'

	test-configuration-file:
	name: Test CD default Docker config file / Test default-conf in Docker
	runs-on: ubuntu-latest
	steps:
	- run: 'echo "No build required"'

	test-zebra-conf-path:
	name: Test CD custom Docker config file / Test custom-conf in Docker
	runs-on: ubuntu-latest
	steps:
	- run: 'echo "No build required"'

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