[x] Occasional build errors if model source is S3 bucket.
Sometimes build service couldn't find model directory and it fails.
[x] Need to keep sync between bucket and local cache.
After model is uploaded to S3 source, manager needs to copy it to the local source on every upload request. Since we removed SQS watcher service, now model state in S3 and in local cache is sometimes inconsistent and desynced
[x] Occasional build errors if model source is S3 bucket. Sometimes build service couldn't find model directory and it fails.
[x] Need to keep sync between bucket and local cache. After model is uploaded to S3 source, manager needs to copy it to the local source on every upload request. Since we removed SQS watcher service, now model state in S3 and in local cache is sometimes inconsistent and desynced