Switched Dockerfile to use feature-muEd-3.8 base image

Author: m-messer

app/Dockerfile

@@ -1,7 +1,8 @@
 # Base image that bundles AWS Lambda Python 3.8 image with some middleware functions
 # FROM base-eval-tmp
 # FROM rabidsheep55/python-base-eval-layer
-FROM ghcr.io/lambda-feedback/baseevalutionfunctionlayer:main-3.8
+#FROM ghcr.io/lambda-feedback/baseevalutionfunctionlayer:main-3.8
+FROM ghcr.io/lambda-feedback/baseevalutionfunctionlayer:feature-muEd-3.8
 
 RUN yum install -y git