feat(ci): nix cache for staging and testnet-internal #4

	name: Nix Cache

	on:
	workflow_dispatch:
	push:
	# Only build nix cache for branches that need distribution
	branches: [ "staging", "testnet-internal", "o/nix-ci" ]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	# build & cache project dependencies
	deps:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: cachix/install-nix-action@v25
	- uses: cachix/cachix-action@v14
	with:
	name: fleek-network
	authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
	- run: nix build .#lightning-deps

	# build & cache node binary
	node:
	runs-on: ubuntu-latest
	needs: deps
	steps:
	- name: Clean runner image
	run: \|
	# Free up some space, we only need nix anyways
	df -h
	sudo rm -rf \
	"$AGENT_TOOLSDIRECTORY" \
	/usr/local/share/boost \
	/usr/share/dotnet \
	/opt/ghc
	echo "After removing files:"
	df -h
	- uses: actions/checkout@v4
	- uses: cachix/install-nix-action@v25
	- uses: cachix/cachix-action@v14
	with:
	name: fleek-network
	authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
	- run: nix build .#lightning-node

	# build & cache services binaries
	services:
	runs-on: ubuntu-latest
	needs: deps
	steps:
	- name: Clean runner image
	run: \|
	# Free up some space, we only need nix anyways
	df -h
	sudo rm -rf \
	"$AGENT_TOOLSDIRECTORY" \
	/usr/local/share/boost \
	/usr/share/dotnet \
	/opt/ghc
	echo "After removing files:"
	df -h
	- uses: actions/checkout@v4
	- uses: cachix/install-nix-action@v25
	- uses: cachix/cachix-action@v14
	with:
	name: fleek-network
	authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
	- run: nix build .#lightning-services

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