Print AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY
that searches environment variables, shared credential file, and EC2 Instance Roles
or
go get -u github.com/kei2100/awskey
$ awskey -n
AWS_ACCESS_KEY_ID=... AWS_SECRET_ACCESS_KEY=...
# specify flags
$ docker run $(awskey --flag=-e) awscli s3 ls
$ circleci local execute $(awskey --flag=-e) --job=test