What will happen after the maximum number of images pushed to ECR repository
According to Amazon ECR Service Limits , the maximum number of images per repository is 1,000. After exceeding this limit, the oldest image won't remove automatically. It blocks pushing to the repository. So I have to clean old images manually. Update: AWS introduced ECR Lifecycle Policies . We can now automate the cleanup with this. Having experienced this exact scenario, I can confirm that upon reaching the limit, AWS will block you from pushing with this very unhelpful error message: Error pushing to registry: Server error: 403 trying to push <repo>:<label> manifest You'll need to manage