Use aws-cli instead of amazonlinux to speed up container build time (#128)

* Change Dockerfile source image to aws-cli

* Set WORKDIR back to default value

---------

Co-authored-by: Joshua-Grisham_SSCSpace <joshua.grisham@sscspace.com>

Author: joshuagrisham

Dockerfile

@@ -1,11 +1,7 @@
-FROM public.ecr.aws/amazonlinux/amazonlinux:latest
- 
-RUN dnf install python3 aws-cli -y
+FROM public.ecr.aws/aws-cli/aws-cli:latest
 
-COPY ./entrypoint . 
+WORKDIR /
+COPY ./entrypoint .
 RUN chmod 0500 /main.py
 
 ENTRYPOINT ["/main.py"]
-
-# note: don't set a WORKDIR in this image, it conflicts with github actions:
-# https://docs.github.com/en/actions/creating-actions/dockerfile-support-for-github-actions#workdir