OIDC utils (#682)

* add Docker file for oidc and aws assume role step curl jq and aws usage

* remove unnecessary arg

* add comment

* use python 3.8 for awscli image for awa assume role with web identity step

Author: kim-codefresh

incubating/aws-sts-assume-role-with-web-identity/Dockerfile

@@ -1,9 +1,9 @@
-FROM python:alpine
+FROM python:3.8-alpine
 
 # using same aws-cli that was used before moving to quay images to prevent regressions
 ARG CLI_VERSION=1.16.284
 
 RUN apk -uv add --no-cache groff jq less && \
     pip install --no-cache-dir awscli==$CLI_VERSION
 
-WORKDIR /aws
+WORKDIR /aws