Update Libreoffice and R, allow configuration of subnet, update readme #105

	# Useful GitHub Actions docs:

	name: Continuous Integration

	on:
	push:
	pull_request:

	jobs:
	# Check formatting
	lint:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repo
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.10"
	cache: pip

	- name: Install dependencies
	run: \|
	python -m pip install -r requirements.txt
	packer plugins install github.com/hashicorp/amazon

	- name: Run checks
	run: \|
	make packer

	powershell_check:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Recursively run PowerShell checks
	shell: pwsh
	run: \|
	Invoke-ScriptAnalyzer -Recurse -EnableExit -Path .

	shellcheck:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Run shellcheck on all modules
	run: \|
	shellcheck modules/*.sh

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