handle proxy settings for aws-sdk

[crazy-max]

fixes #146

cc @Flydiverny @svasek

Signed-off-by: CrazyMax crazy-max@users.noreply.github.com

[Flydiverny]

Looks reasonable to me! :)

[svasek]

Hi @crazy-max,
🎉 Congratulation! I can confirm it works like a charm in both scenarios.
So, It works even with the aws-actions/configure-aws-credentials.

It's also not necessary to set additional env for the step if proxy is set in the runner global environment.
Thank you very much. Good job!

► Run crazy-max/docker-login-action@aws-sdk-proxy
::save-state name=isPost::true
##[debug]Save intra-action state isPost = true
::save-state name=registry::***.dkr.ecr.us-west-2.amazonaws.com
##[debug]Save intra-action state registry = ***.dkr.ecr.us-west-2.amazonaws.com
::save-state name=logout::true
##[debug]Save intra-action state logout = true
Retrieving registries data through AWS SDK...
##[debug]Requesting AWS ECR auth token for ***
##[debug]Using http proxy http://proxy-us-aws.***.***:3128
##[debug]Using https proxy http://proxy-us-aws.***.***:3128
AWS ECR detected with us-west-2 region
(node:910) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
Logging into https://***.dkr.ecr.us-west-2.amazonaws.com...
Login Succeeded!
##[debug]Node Action run completed with exit code 0
##[debug]Finishing: Login to AWS ECR