➕ Install xvfb in Jammy image

[shnizzedy]

Fixes

Fixes https://cmi-cnl.slack.com/archives/GC8KKE490/p1693505192148309?thread_ts=1693325531.117369&cid=GC8KKE490 by @nx10
Fixes https://cmi-cnl.slack.com/archives/GC8KKE490/p1693505884160539?thread_ts=1693325531.117369&cid=GC8KKE490 by @e-kenneally
Fixes #1971 by @shnizzedy
Fixes #1981 by @shnizzedy

Description

Installs xvfb in Jammy base OS image.

Technical details

#1981 moved the Python wrapper installation into C-PAC's install requirements, but that doesn't install the core package.

Tests

C-PAC/CPAC/utils/tests/test_utils.py

Lines 26 to 48 in ef5db25

	def _installation_check(command: str, flag: str) -> None:
	"""Test that command is installed by running specified version or
	help flag.
	Parameters
	----------
	command : str
	Command to run.
	flag : str
	Version or help flag to run.
	Raises
	------
	AssertionError
	If command is not installed.
	Returns
	-------
	None
	"""
	_, exit_code = log_subprocess([command, flag])
	assert exit_code == 0

C-PAC/CPAC/utils/tests/test_utils.py

Lines 72 to 75 in ef5db25

	@pytest.mark.parametrize("executable", ["Xvfb"])
	def test_executable(executable):
	"""Make sure executable is installed"""
	_installation_check(executable, "-help")

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the develop branch of the repository.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added tests for the changes I made (if applicable).
• I updated the changelog.
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.

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