ORIGINAL:
Lifecycle policies help with managing the lifecycle of the images in your repositories.
BETTER:
Lifecycle policies help you manage the lifecycles of the images in your repositories.
EXPLANATION:
At the very least, the word “lifecycle” needs to be pluralized. The sentence is simpler when the phrase “you manage” is used instead of “managing”. Creating nouns out of verbs by adding “ing” frequently adds unnecessary complexity to a sentence.