no module named boto3 when attempting to start tfserving 1.14 container

[rbavery]

Describe the bug
./scripts.start.sh results in boto3 not found error after building with ./scripts/build.sh --version 1.14 --arch cpu

To reproduce
see above

Expected behavior
not

→ ./scripts/start.sh                          
Traceback (most recent call last):
  File "/sagemaker/serve.py", line 14, in <module>
    import boto3
ModuleNotFoundError: No module named 'boto3'

System information
A description of your system. Please provide:

• Toolkit version:
• Framework version:
• Python version:
• CPU or GPU:
• Custom Docker image (Y/N): N

[Wavewash]

Found the same issue with 1.13

log.txt:
WARNING: Published ports are discarded when using host network mode
Traceback (most recent call last):
File "/sagemaker/serve.py", line 14, in
import boto3
ModuleNotFoundError: No module named 'boto3'