in docker/build_artifacts/deep_learning_container.py [0:0]
def _validate_instance_id(instance_id):
"""
Validate instance ID
"""
instance_id_regex = r'^(i-\S{17})'
compiled_regex = re.compile(instance_id_regex)
match = compiled_regex.match(instance_id)
if not match:
return None
return match.group(1)